Please look in Eschmeyer's Catalog of Fishes for authorships of sections, Families of Fishes (all), and related information.

Species in the family or subfamily Callichthyidae: [ 314 ] records

acrensis, Corydoras Nijssen [H.] 1972:416, Fig. 1 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Furo do Lago São Francisco, 7°40'S, 72°39'W, tributary at left bank of Rio Juruá, Acre State, Brazil. Holotype (unique): IRSNB 505. Type catalog: Walschaerts 1987:17 [ref. 20755], Ferraris 2007:112 [ref. 29155]. •Valid as Corydoras acrensis Nijssen 1972 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:219 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:112 [ref. 29155], Lima & Sazima 2017:30 [ref. 35111]). •Valid as Hoplisoma acrense (Nijssen 1972) -- (Dias et al. 2024:26 [ref. 41219] as acrensis). Current status: Valid as Hoplisoma acrense (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: Juruá River basin, Brazil. Habitat: freshwater.

acutus, Corydoras Cope [E. D.] 1872:281 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambiyacu, Shansho Caño, Loreto, Peru. Neotype: CAS-SU 33307. Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:112 [ref. 29155]. Neotype designated by Nijssen & Isbrücker 1980:215 [ref. 6910]; original syntypes ANSP 8292-8293 lost. •Valid as Corydoras acutus Cope 1872 -- (Ovchynnyk 1967:36 [ref. 37559], Nijssen & Isbrücker 1980:215 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:219 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Barriga Salazar 2014:111 [ref. 35745], Tencatt et al. 2014:78 [ref. 33230], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388], Tencatt & Ohara 2016:432 [ref. 34627], Ottoni et al. 2016:132 [ref. 34756], Meza-Vargas et al. 2021:24 [ref. 39298], Tencatt et al. 2021:8 [ref. 38289], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras acutus Cope 1872. Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (northern Peru, Ecuador and Bolivia). Habitat: freshwater.

adolfoi, Corydoras Burgess [W. E.] 1982:15, 2 Figs. [Tropical Fish Hobbyist v. 30 (no. 7); ref. 8505] Small tributary of the upper Rio Negro on the equator near São Gabriel da Cachoeira, Brazil. Holotype: MZUSP 26641. Paratypes: MZUSP [ex USNM 235310] (1), USNM 235310 (3, now 2), ZMA (3). Type catalog: Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:112 [ref. 29155] •Valid as Corydoras adolfoi Burgess 1982 -- (Burgess 1989:365 [ref. 12860], Isbrücker 2001:219 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:112 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388]). •Valid as Hoplisoma adolfoi (Burgess 1982) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma adolfoi (Burgess 1982). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.

adspersus, Callichthys Steindachner [F.] 1876:135 [87], Pl. 11 (figs. 2, 2a-b) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Xingu River at Porto de Moz; Amazonas River at Cudajas and Tabatinga, Brazil. Syntypes: (several) MCZ 8223 (8), 8245 + 8265 (8), 8266 (1); NMW 47667-69 (2, 2, 2), 47672-73 (2, 2); USNM 41518 [ex MCZ 8245 or 8265] (2, now 1, 1 missing) Bourget, Tabatinga, Brazil. Type catalog: Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:127 [ref. 29155]. On p. 87 of separate. •Synonym of Dianema longibarbis Cope 1872 -- (Reis in Reis et al. 2003:304 [ref. 27061] dated 1877, Ferraris 2007:127 [ref. 29155] dated 1877). Current status: Synonym of Dianema longibarbis Cope 1872. Callichthyidae: Callichthyinae. Habitat: freshwater.

aeneum, Hoplosoma Gill [T. N.] 1858:403 [43] [Annals of the Lyceum of Natural History of New York v. 6 (nos 10-13, art. 38); ref. 1750] Trinidad Island, West Indies. Lectotype: USNM 1116. Paralectotypes: ?USNM 92819 (1), 205649 (3). Type catalog: Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:112 [ref. 29155]. On p. 43 of separate. Lectotype selected by Nijssen & Isbrücker 1980:208 [ref. 6910]. •Valid as Corydoras aeneus (Gill 1858) -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Turner et al. 1992:17 [ref. 22320], Gómez & Chebez 1996:62 [ref. 23791], Britski et al. 1999:126 [ref. 24147], Fuller et al. 1999:218 [ref. 25838], Le Bail et al. 2000:184 [ref. 24549], Helmdach 2001:12 [ref. 25830], Casatti et al. 2001:5 [ref. 25929] as cf. aeneus, Isbrücker 2001:219 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], López et al. 2003:42 [ref. 27366], Casciotta et al. 2003:127 [ref. 28130] as cf. aeneus, Menni 2004:82 [ref. 28131], Mundy 2005:154 [ref. 28379], Ferraris 2007:112 [ref. 29155], Calviño & Alonso 2010:199 [ref. 30829], Tencatt et al. 2013:258 [ref. 32752], Phillip et al. 2013:18 [ref. 32896], Barriga Salazar 2014:111 [ref. 35745], Espíndola et al. 2014:26 [ref. 33269], Litz & Koerber 2014:23 [ref. 33622], Sarmiento et al. 2014:148, 190 [ref. 35004], Mirande & Koerber 2015:39 [ref. 35117], Tencatt & Ohara 2016:[12] [ref. 34353], Ottoni et al. 2016:132 [ref. 34756], Bertaco et al. 2016:416 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Koerber et al. 2017:57 [ref. 35267], DoNascimiento et al. 2017:72 [ref. 35633], Grant 2018:26 [ref. 36057], Reis et al. 2020:464 [ref. 38364], Meza-Vargas et al. 2021:25 [ref. 39298], Taphorn et al. 2022:44 [ref. 41297], Jamandre 2023:174 [ref. 40455], Loureiro et al. 2023:93 [ref. 40506], Tencatt et al. 2023:22 [ref. 40180]). •Valid as Osteogaster aenea (Gill 1858) -- (Dias et al. 2024:24 [ref. 41219] as aeneus, Koerber 2024:5 [ref. 41228] as aeneus). Current status: Valid as Osteogaster aenea (Gill 1858). Callichthyidae: Corydoradinae. Distribution: South America: Guyana, Trinidad and Tobago, Venezuela and ? Colombia. Introduced in the Hawaiian Islands (U.S.A.), the Philippines, Paraguay and Uruguay. Habitat: freshwater.

affinis, Callichthys Günther [A.] 1864:226 [Catalogue of the fishes in the British Museum v. 5; ref. 1974] Rio Grande [Rio Grande do Sul], Brazil. Syntypes: BMNH 1861.5.7.1-4 (4). Type catalog: Ferraris 2007:111 [ref. 29155]. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

agassizii, Corydoras Steindachner [F.] 1876:138 [90], Pl. 12 (figs. 2-2a) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River near Tabatinga, Amazonas, Brazil. Lectotype: NMW 61112 [ex NMW 46697]. Paralectotypes: NMW 46697 (1); ZMA 110465 [ex NMW 46697] (1). Type catalog: Nijssen et al. 1982:42 [ref. 19236], Ferraris 2007:112 [ref. 29155]. On p. 90 of separate. Lectotype selected by Nijssen & Isbrücker 1980:195 [ref. 6910]. •Valid as Corydoras agassizii Steindachner 1876 -- (Nijssen & Isbrücker 1980:195 [ref. 6910], Burgess 1989:365 [ref. 12860], Grant 1998:45 [ref. 23454], Isbrücker 2001:219 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061] dated 1877, Ferraris 2007:112 [ref. 29155] dated 1877, DoNascimiento et al. 2017:72 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis agassizii (Steindachner 1876) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis agassizii (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin near border of Brazil and Peru (Brazil, Colombia and Peru). Habitat: freshwater.

albater, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:115, Fig. 6 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Rio Tocantinzinha near São João da Aliança, 14°46'S, 47°30'W, Rio Tocantins system, Goiás State, Brazil. Holotype: MZUSP 12991 [ex USNM 213539]. Paratypes: MZUSP 12992 (4), USNM 213540 (5), ZMA 113592 (2). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:108 [ref. 29155]. •Valid as Aspidoras albater Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:108 [ref. 29155], Secutti et al. 2011:690 [ref. 31723], Wosiacki et al. 2014:315 [ref. 33356], Leão et al. 2015:583 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:23 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras albater Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: Tocantins-Araguaia, Paraná and Paraguay River basins, Goiás and Mato Grosso, central Brazil. Habitat: freshwater.

albidus, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:316 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana. Syntypes: MNHN 0000-4276-77 (1, 1). Type catalog: Bertin & Estève 1950:66 [ref. 19575], Ferraris 2007:128 [ref. 29155]. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

albolineatus, Corydoras Knaack [J.] 2004:73, Figs. 13-18 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Paragua, northwestern bank, river mouth area, río Itenez system, Raum Piso firme, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia., 13°31.989'S, 61°50.295'W. Holotype: MTD F 28470. Paratypes: CAS uncat. (2); CIRA-UTB 1082 (2); CJK uncat. (312), uncat. (104), uncat. (37); MTD F 28471 (1); ZMA 123.1000.736 (1), 123.1000.737 (1); ZMB 33532 (1), 33533 (1). Type catalog: Ferraris 2007:112 [ref. 29155]. •Valid as Corydoras albolineatus Knaack 2004 -- (Ferraris 2007:112 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Hoplisoma albolineatum (Knaack 2004) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma albolineatum (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

aldebaran, Aspidoras Tencatt [L. F. C.], Britto [M. R.], Isbrücker [I. J. H.] & Pavanelli [C. S.] 2022:9, Figs. 2, 4, 6-7, 9 [Neotropical Ichthyology v. 20 (no. 3): e220040; ref. 39729] Ribeirão do Sapo, upstream the Couto de Magalhães Waterfall, rio Araguaia basin, Alto Araguaia Municipality, Mato Grosso State, Brazil, 17°31'10"S, 53°15'33"W. Holotype: LIRP 16933. Paratypes: CITL, CPUFMT, LIRP, MZUSP. •Valid as Aspidoras aldebaran Tencatt, Britto, Isbrücker & Pavanelli 2022 -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras aldebaran Tencatt, Britto, Isbrücker & Pavanelli 2022. Callichthyidae: Corydoradinae. Distribution: South America: upper Araguaia River and Paraguay River basins, Goiás and Mato Grosso, Brazil. Habitat: freshwater.

altamazonicum, Lepthoplosternum Reis [R. E.] 1997:318, Fig. 318 [Ichthyological Exploration of Freshwaters v. 7 (no. 4); ref. 22747] Río Ucayali, Pucallpa, Peru. Holotype: MHNG 2551.01. Paratypes: MCP 17296 (1), 17301 (2), 17313 (3, 2 c&s); MHNG 2157.23 (2), 2157.26, 2388.94 (6); MZUSP 26425 (1); NRM 15420 (3); CAS-SU 58853 (1); USNM 284581 (1). Type catalog: Weber 1998:10 [ref. 32707], Ferraris 2007:128 [ref. 29155]. •Valid as Lepthoplosternum altamazonicum Reis 1997 -- (Reis 1998:353 [ref. 23849], Reis in Reis et al. 2003:305 [ref. 27061], Reis & Kaefer 2005:724 [ref. 28481], Ferraris 2007:128 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). Current status: Valid as Lepthoplosternum altamazonicum Reis 1997. Callichthyidae: Callichthyinae. Distribution: South America: upper Amazon River basin (Brazil, Colombia and Peru). Habitat: freshwater.

amandajanea, Corydoras Sands [D. D.] 1995:10, Figs. 1-3 [Freshwater and Marine Aquarium v. 18 (no. 7); ref. 22671] Rio Miuã system of streams, possibly the Uarinabe stream, 10-12 kilometers from its confluence of the upper Negro River, Brazil. Holotype: LIVCM 1994.4.21. Paratypes: LIVCM 1994.4.22-28 (7). Type catalog: Ferraris 2007:112 [ref. 29155]. •Valid as Corydoras amandajanea Sands 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:112 [ref. 29155]). •Valid as Brochis amandajanea (Sands 1995) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis amandajanea (Sands 1995). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

amapaensis, Corydoras Nijssen [H.] 1972:417, Figs. 2, 3; Pl. 3 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Cachoera Creek at right bank of Rio Amapari, 4 kilometers downstream of Casa do 7, Amapa, Brazil. Holotype: IRSNB 476. Paratypes: IRSNB 477-484 (now 2, now 1, now 3, 1, 1, now 2, now 2, now 4); MZUSP (12 spec. from 6 IRSNB lots); USNM 205865 (1); ZMA 110598-603 (2, 1, 4, 3, 1, 3). Type catalog: Nijssen et al. 1982:42 [ref. 19236], Walschaerts 1987:17 [ref. 20755], Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras amapaensis Nijssen 1972 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:365 [ref. 12860], Le Bail et al. 2000:186 [ref. 24549], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras amapaensis Nijssen 1972. Callichthyidae: Corydoradinae. Distribution: South America: Oyapock and Amapari Rivers drainages, Amapá State, Brazil and French Guiana. Habitat: freshwater.

ambiacus, Corydoras Cope [E. D.] 1872:280 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Holotype (unique): ANSP 8291. Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras ambiacus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388], DoNascimiento et al. 2017:72 [ref. 35633], Grant 2021:30 [ref. 38454], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis ambiacus (Cope 1872) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis ambiacus (Cope 1872). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Brazil, Ecuador, Colombia and Peru). Habitat: freshwater.

amphibelus, Corydoras Cope [E. D.] 1872:282 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributaries of Río Ambyiacu, near Pebas, about 3°10'S, 71°50'W, Peru. Holotype (unique): ANSP 8290. Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras amphibelus Cope 1872 -- (Nijssen & Isbrücker 1980:195 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma amphibelum (Cope 1872) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma amphibelum (Cope 1872). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Peru and Ecuador). Habitat: freshwater.

apiaka, Corydoras Espíndola [V. C.], Spencer [M. R. S.], Rocha [L. R.] & Britto [M. R.] 2014:26, Figs. 1-2 [Papéis Avulsos de Zoologia, Museu de Zoologia da Universidade de São Paulo v. 54 (no. 3); ref. 33269] Ribeirão Oito de Julho, a tributary of the right margin of rio Arinos, Rio Tapajós basin, road MT‑338 between Tapurah-Nova Paraná, Porto dos Gaúchos, Mato Grosso, 11°41’44"S, 57°06’42"W, Brazil. Holotype: MNRJ 40720. Paratypes: MNRJ, MZUSP. •Valid as Corydoras apiaka Espíndola, Spencer, Rocha & Britto 2014 -- (Tencatt et al. 2022:34 [ref. 39741]). •Valid as Hoplisoma apiaka (Espíndola, Spencer, Rocha & Britto 2014) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma apiaka (Espíndola, Spencer, Rocha & Britto 2014). Callichthyidae: Corydoradinae. Distribution: South America: Rio Tapajós basin, Brazil. Habitat: freshwater.

approuaguensis, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:73, Figs. 1-2, 10a [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Approuague River, French Guiana. Holotype: ZMA 119098. Paratypes: IRSNB 696 (2), MNHN 1983-0527 (2), MZUSP 27895-6 (2), ZMA 119099 (16). Type catalog: Walschaerts 1987:17 [ref. 20755], Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras approuaguensis Nijssen & Isbrücker 1983 -- (Burgess 1989:365 [ref. 12860], Grant 1988:45 [ref. 23454], Le Bail et al. 2000:188 [ref. 24549], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388]). •Valid as Brochis approuaguensis (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis approuaguensis (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: Approuague River basin, French Guiana. Habitat: freshwater.

araguaiaensis, Corydoras Sands [D. D.] 1990:no page number, Fig. [Catfishes of the World Suppl.; ref. 21579] Rio Araguaia, Brazil. Holotype: RMNH. Paratypes: ZMA 119218 (32). Type catalog: Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras araguaiaensis Sands 1990 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Ferraris 2007:113 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Britto 2016:[1] [ref. 34336], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388], Lima & Sazima 2017:30 [ref. 35111]). •Valid as Hoplisoma araguaiaense (Sands 1990) -- (Dias et al. 2024:26 [ref. 41219] as araguaiaensis). Current status: Valid as Hoplisoma araguaiaense (Sands 1990). Callichthyidae: Corydoradinae. Distribution: South America: Araguaia River basin, Brazil. Habitat: freshwater.

arcifer, Callichthys Hensel [R.] 1868:373 [Archiv für Naturgeschichte v. 34 (pt 1); ref. 14075] Rio de Janeiro, Brazil. Holotype (unique): ZMB 7433. Type catalog: Ferraris 2007:111 [ref. 29155]. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

arcuatus, Corydoras Elwin [M. G.] 1938:126, Pl. 3 [Annals and Magazine of Natural History (Series 11) v. 3 (no. 13); ref. 17186] Amazon River (aquarium specimen). Holotype: BMNH 1939.3.3.1. Paratype: (1) lost. Type catalog: Ferraris 2007:113 [ref. 29155]. Nijssen & Isbrücker 1986:43 restricted the type locality, but that is not supported by the Code. •Valid as Corydoras arcuatus Elwin 1938 -- (Ovchynnyk 1967:36 [ref. 37559], Nijssen & Isbrücker 1980:209 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:113 [ref. 29155], Britto et al. 2009:687 [ref. 30609], Barriga Salazar 2014:111 [ref. 35745], Tencatt & Ohara 2016:[12] [ref. 34353] as cf. arcuatus, Ottoni et al. 2016:132 [ref. 34756], DoNascimiento et al. 2017:72 [ref. 35633], Tencatt et al. 2019:[3] [ref. 36697], Bentley et al. 2021:189 [ref. 38185], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis arcuatus (Elwin 1938) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis arcuatus (Elwin 1938). Callichthyidae: Corydoradinae. Distribution: South America: middle Rio Juruá drainage (Brazil), Rio Javari drainage (Brazil / Peru) and streams north of Leticia (Colombia). Habitat: freshwater.

areio, Corydoras Knaack [J.] 2000:47, Figs. [VDA--aktuell 2/2000; ref. 25359] Streams of the Corr. Areio systems, in the vicinity of Vila Nova, East of Cuiaba, Mato Grosso, Brazil. Holotype: BZM 33113. Paratypes: BZM 33136 (9). Type catalog: Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras areio Knaack 1999 -- (Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Ferraris 2007:113 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388], Tencatt et al. 2020:5 [ref. 37986], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras areio Knaack 2000. Callichthyidae: Corydoradinae. Distribution: South America: upper Paraguay River basin (Mato Grosso and Mato Grosso do Sul, Brazil). Habitat: freshwater.

argentina, Corydoras punctatus var. Steindachner [F.] 1879:26 [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 41; ref. 4228] Not available, name only in synonymy of Corydoras marmoratus. •In the synonymy of Corydoras paleatus (Jenyns 1842) -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Reis in Reis et al. 2003:301 [ref. 27061], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117]). •Not in the synonymy of Corydoras paleatus (Jenyns 1842) -- (Tencatt et al. 2016:[9] [ref. 34388]). Nomen Nudum. Current status: Uncertain as Hoplisoma paleatum (Jenyns 1842). Callichthyidae: Corydoradinae.

armatus, Callichthys Günther [A.] 1868:476 [Annals and Magazine of Natural History (Series 4) v. 1 (no. 6) (art. 56); ref. 1992] Río Huallaga, Amazon system, Peru. Lectotype: BMNH 1867.6.13.51. Paralectotypes: BMNH 1867.6.13.52 (1), 1867.6.13.30 (1); ZMA 109952 [ex BMNH 1867.6.13.31] (1). Type catalog: Nijssen et al. 1982:40 [ref. 19236], Ferraris 2007:113 [ref. 29155]. Also appeared in Günther 1868:230, Fig. 1 [ref. 5756]. Lectotype selected by Nijssen & Isbrücker 1908:194 [ref. 6910]. •Valid as Corydoras armatus (Günther 1868) -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Lasso et al. 2001:98 [ref. 25928], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:113 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt et al. 2016:[16] [ref. 34388], see DoNascimiento et al. 2017:[16] [ref. 35679], Bogotá-Gregory et al. 2020:1401 [ref. 37878], Careaga et al. 2020:77 [ref. 37774], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma armatum (Günther 1868) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma armatum (Günther 1868). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Ecuador, Peru, Colombia and Bolivia). Habitat: freshwater.

asper, Callichthys Quoy [J. R. C.] & Gaimard [J. P.] 1824:232 [Voyage autour du monde; ref. 3574] Rio de Janeiro, Brazil [= Rio Macacu at the village of Japuíba, State of Rio de Janeiro, Brazil, 22°33'40"S, 42°41'40"W]. Syntypes: MNHN 0000-1951 (2). Type catalog: Bertin & Estève 1950:64 [ref. 19575], Ferraris 2007:110 [ref. 29155]. Type locality restricted by Koerber & Reis 2020:4 [ref. 37463]. •Listed under Callichthys aff. callichthys (Linnaeus 1758) -- (Malabarba 1989:146-146 [ref. 14217]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:110 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

asper, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:302 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana; Rio de Janeiro, Brazil. No types known. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

atropersonatus, Corydoras Weitzman [S. H.] & Nijssen [H.] 1970:123, Figs. 2, 6b [Beaufortia v. 18 (no. 233); ref. 7481] Río Conambo at mouth of River Shione, Río Tigre system, about 2°00'S, 76°30'W, Pastaza State, Ecuador. Holotype: USNM 204359. Paratypes: BMNH 1970.4.17.1-2 (2); EPN 4429-4436 (3); USNM 204360 (5); ZMA 110382 (2), 110385-86 (3, 1). Type catalog: Nijssen et al. 1982:42 [ref. 19236], Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras atropersonatus Weitzman & Nijssen 1970 -- (Nijssen & Isbrücker 1980:201 [ref. 6910], Burgess 1989:365 [ref. 12860], Grant 1998:43 [ref. 23454], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:113 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Lima & Britto 2020:528 [ref. 37324], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma atropersonatum (Weitzman & Nijssen 1970) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma atropersonatum (Weitzman & Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Ecuador and Peru). Habitat: freshwater.

auratus, Corydoras Meinken [H.] 1957:7 [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 10 (no. 1); ref. 12156] South America. No types known. Name only according to Nijssen and Isbrücker 1979:133 [ref. 19254]. Nomen Nudum. Callichthyidae: Corydoradinae.

aurofrenatus, Corydoras Eigenmann [C. H.] & Kennedy [C. H.] 1903:507 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 55; ref. 1260] Aguada near Arroyo Trementina, Paraguay. Holotype (unique): CAS 20661 [ex IU 9891]. Type catalog: Ferraris 2007:113 [ref. 29155]. •Valid as Corydoras aurofrenatus Eigenmann & Kennedy 1903 -- (Nijssen & Isbrücker 1980:215 [ref. 6910], Burgess 1989:365 [ref. 12860], Britski et al. 1999:126 [ref. 24147], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:221 [ref. 26805], López et al. 2003:42 [ref. 27366], Reis in Reis et al. 2003:295 [ref. 27061], Menni 2004:82 [ref. 28131], Ferraris 2007:113 [ref. 29155], Calviño & Alonso 2010:199 [ref. 30829], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:39 [ref. 35117], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[16] [ref. 34388], Koerber et al. 2017:57 [ref. 35267], Tencatt et al. 2020:16 [ref. 37986], Koerber et al. 2023:2 [ref. 40368], Dias et al. 2024:23 [ref. 41219], Koerber 2024:4 [ref. 41228]). Current status: Valid as Corydoras aurofrenatus Eigenmann & Kennedy 1903. Callichthyidae: Corydoradinae. Distribution: South America: Paraguay River basin, Paraguay and Ente rivers, Argentina (Argentina, Paraguay and Bolivia). Habitat: freshwater.

australe, Corydoras Eigenmann [C. H.] & Ward [D. P.] in Eigenmann, McAtee & Ward 1907:123 [Annals of the Carnegie Museum v. 4 (no. 2) (art. 7); ref. 1261] Upper rio Paraguai at Corumbá (19°00'S, 57°25'W), tributary of Rio Pilcomayo, Rio Paraguay system, Mato Grosso, Brazil. Holotype: CAS 67915 [ex IU 10129]. Paratypes: (7) AMNH 1232 (1), CAS 67916 [ex IU 10130] (orig. 5, now 1, missing), CAS 77305 [ex IU 10129] (2, now 1), FMNH 52619 [ex CM 948] (1), NMW 46698 (1), ZMB 17248 (1). Type catalog: Ibarra & Stewart 1987:27 [ref. 12367], Ferraris 2007:118 [ref. 29155]. •Questionably valid as Corydoras australis Eigenmann & Ward 1907 -- (Isbrücker 2001:221 [ref. 26805]). •Valid as Corydoras australis Eigenmann & Ward 1907 -- (Casciotta et al. 2003:128 [ref. 28130]). •Synonym of Corydoras hastatus Eigenmann & Eigenmann 1888 -- (Nijssen & Isbrücker 1980:213 [ref. 6910], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117], Koerber et al. 2017:58 [ref. 35267], Grant 2019:7 [ref. 37238]). Current status: Synonym of Gastrodermus hastatus (Eigenmann & Eigenmann 1888). Callichthyidae: Corydoradinae. Habitat: freshwater.

axelrodi, Corydoras Rössel [F.] 1962:335, Figs. 1-3 [Senckenbergiana Biologica v. 43 (no. 5); ref. 6417] Río Meta, Colombia. Holotype: SMF 5700. Paratypes: SMF 5701-02 (2). Type catalog: Ferraris 2007:113 [ref. 29155]. Also appeared as new in Rössel 1964:78 [ref. 34686]. •Valid as Corydoras axelrodi Rössel 1962 -- (Ferraris 2007:113 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773], Cortés Hernández et al. 2023:456 [ref. 40760]). •Valid as Hoplisoma axelrodi (Rössel 1962) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma axelrodi (Rössel 1962). Callichthyidae: Corydoradinae. Distribution: South America: Meta River basin (Colombia). Habitat: freshwater.

azaghal, Aspidoras Tencatt [L. F. C.], Muriel-Cunha [J.], Zuanon [J.], Ferreira [M. F. C.] & Britto [M. R.] 2020:3, Figs. 1, 2a, 3-7 [Journal of Fish Biology v. 97 (no. 4); ref. 37733] Unnamed Igarapé I, tributary to the Igarapé do Pontal, itself a tributary to the lower rio Xingu basin, Parque Nacional da Serra do Pardo, Terra do Meio Region, Pará, Brazil, 6°00'58"S, 53°08'20"W. Holotype: MNRJ 51793. Paratypes: INPA, MCP, MNRJ, MPEG, MZUSP, NUP, ZUFMS. Type catalog: Oliveira et al. 2022:10 [ref. 39255]. •Valid as Aspidoras azaghal Tencatt, Muriel-Cunha, Zuanon, Ferreira & Britto 2020 -- (Tencatt et al. 2022:40 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras azaghal Tencatt, Muriel-Cunha, Zuanon, Ferreira & Britto 2020. Callichthyidae: Corydoradinae. Distribution: South America: lower Xingu River basin (Pará, Brazil). Habitat: freshwater.

baderi, Corydoras Geisler [R.] 1969:354, Figs. 1-2 [Senckenbergiana Biologica v. 50 (no. 5/6); ref. 7738] Rio Paru do Oreste, 2°12'N, 55°59'W, Pará State, northern Brazil. Holotype: SMF 9651. Paratypes: SMF 9652-53 (1, 1), 9786-87 (2), 9788-89 (1, 1); ?MTD F 27190 (1), F 27181-97 (7). Type catalog: Zarske 2003:24 [ref. 27474] with MTD specimens as paratypes, Ferraris 2007:113 [ref. 29155]. Also described as new in Geisler 1974:35 [ref. 34382]. •Valid as Corydoras baderi Geisler 1969 -- (Geisler 1974:35 [ref. 34382], Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:365 [ref. 12860], Le Bail et al. 2000:190 [ref. 24549], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:113 [ref. 29155], Ottoni et al. 2016:132 [ref. 34756]). •Valid as Hoplisoma baderi (Geisler 1969) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma baderi (Geisler 1969). Callichthyidae: Corydoradinae. Distribution: South America: Pará State, Brazil and Maroni River drainage, Suriname. Habitat: freshwater.

barbatus, Callichthys Quoy [J. R. C.] & Gaimard [J. P.] 1824:234 [Voyage autour du monde; ref. 3574] Fazenda da Japuhyba near Angra dos Reis, 22°59'S, 44°17'W, Rio de Janeiro, Brazil. Neotype: CAS 16006 [ex CAS-SU 68290]. Type catalog: Ferraris 2007:129 [ref. 29155]. Neotype designated by Nijssen & Isbrücker 1980:202 [ref. 6910]. Original type locality specified by Koerber & Reis 2020:4 [ref. 37463] as Rio Inhomirim, village of Inhomirim, city of Magé, state of Rio de Janeiro, Brazil, 22°34'34"S, 43°11'05"W. •Valid as Corydoras barbatus (Quoy & Gaimard 1824) -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796]). •Valid as Scleromystax barbatus (Quoy & Gaimard 1824) -- (Britto 2003:147 [ref. 27338], Britto & Reis 2005:481 [ref. 28458], Knaack 2007:36 [ref. 29221], Ferraris 2007:129 [ref. 29155], Ottoni et al. 2016:133 [ref. 34756], Britto et al. 2016:[9] [ref. 34806], Reis et al. 2020:465 [ref. 38364], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax barbatus (Quoy & Gaimard 1824). Callichthyidae: Corydoradinae. Distribution: South America: coastal drainages from Rio de Janeiro to Santa Catarina states (Brazil). Habitat: freshwater.

barima, Corydoras Isbrücker [I. J. H.] 1969:292 [Het Aquarium v. 39 (no. 9); ref. 19658] Name only, see also Nijssen and Isbrücker 1979:133 [ref. 19254]. Nomen Nudum. Current status: Synonym of Hoplisoma sipaliwini (Hoedeman 1965). Callichthyidae: Corydoradinae.

belenos, Aspidoras Britto [M. R.] 1998:361, Figs. 1-2, 34a, 4a, 5a, 6b [Ichthyological Exploration of Freshwaters v. 8 (no. 4); ref. 23327] Creek at Primavera do Leste - Paranatinga road, 82 kilometers north from Primavero de Leste, rio das Mortes basin, Mato Grosso State, Brazil, 15°03'S, 52°03'W. Holotype: MNRJ 12433. Paratypes: MCP 19294 (3); MZUSP 51208 (3); UFRJ 1206 (2), 3861 (3 c&s); UMMZ 232102 (3). Type catalog: Ferraris 2007:108 [ref. 29155]. Name is a noun in apposition. •Valid as Aspidoras belenos Britto 1998 -- (Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:108 [ref. 29155], Wosiacki et al. 2014:315 [ref. 33356], Leão et al. 2015:578 [ref. 33891], Ottoni et al. 2016:132 [ref. 34756], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227] wrong holotype number, Tencatt et al. 2022:40 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras belenos Britto 1998. Callichthyidae: Corydoradinae. Distribution: South America: das Mortes River basin, Mato Grosso, Brazil. Habitat: freshwater.

benattii, Corydoras Espíndola [V. C.], Tencatt [L. F. C.], Pupo [F. M.], Villa‐Verde [L.] & Britto [M. R.] 2018:[3], Figs. 1-9 [Journal of Fish Biology v. 92 (no. 5); ref. 35899] Rio Culuene, a tributary to the Rio Xingu, between Canarana and Gaúcha do Norte, Mato Grosso, Brazil, 13°30'52"S, 53°05'34"W. Holotype: MZUSP 121671. Paratypes: MNRJ, MZUSP, ZUFMS. Plus additional non-type material. •Valid as Corydoras benattii Espíndola, Tencatt, Pupo, Villa‐Verde & Britto 2018 -- (Tencatt et al. 2022:34 [ref. 39741]). •Valid as Hoplisoma benattii (Espíndola, Tencatt, Pupo, Villa‐Verde & Britto 2018) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma benattii (Espíndola, Tencatt, Pupo, Villa‐Verde & Britto 2018). Callichthyidae: Corydoradinae. Distribution: South America: Xingu and Tapajós River basins, Brazilian Amazon, Brazil. Habitat: freshwater.

beni, Lepthoplosternum Reis [R. E.] 1997:319, Fig. 15 [Ichthyological Exploration of Freshwaters v. 7 (no. 4); ref. 22747] Tambopata Reserve, 12°15'S, 69°17'W, Madre de Dios, Peru. Holotype: USNM 329424. Paratypes: AMNH 58760 (4); MCP 17299 (1), 17300 (6, 2 c&s); USNM 302276 (2), 302284 (12), 304582 (2), 305858 (26). Type catalog: Ferraris 2007:128 [ref. 29155]. •Valid as Lepthoplosternum beni Reis 1997 -- (Reis 1998:353 [ref. 23849], Reis in Reis et al. 2003:305 [ref. 27061], Reis & Kaefer 2005:724 [ref. 28481], Ferraris 2007:128 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004]). Current status: Valid as Lepthoplosternum beni Reis 1997. Callichthyidae: Callichthyinae. Distribution: Madeira River basin in Beni region of Bolivia and Peru. Habitat: freshwater.

bertoni, Corydoras Eigenmann [C. H.] in Eigenmann & Allen 1942:179 [Fishes of western South America; ref. 1246] Puerto Bertoni, upper Paraná River basin, Paraguay. Holotype (unique): CAS [ex IU 15441] (missing in 1997). Type catalog: Ferraris 2007:130 [ref. 29155]. •Synonym of Corydoras macropterus Regan 1913 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061]). •Valid as Corydoras bertoni Eigenmann 1942 -- (Knaack 2004:111 [ref. 28306]). •Synonym of Scleromystax macropterus (Regan 1913) -- (Ferraris 2007:130 [ref. 29155], Litz & Koerber 2014:24 [ref. 33622], Koerber et al. 2017:58 [ref. 35267]). Current status: Synonym of Scleromystax macropterus (Regan 1913). Callichthyidae: Corydoradinae. Habitat: freshwater.

bethanae, Corydoras Bentley [R. F.], Grant [S.] & Tencatt [L. F. C.] 2021:185, Figs. 1, 2A, 3A, 4-6 [Zootaxa 4948 (no. 2); ref. 38185] Río Blanco close to the confluence with the río Tapiche, Soplin District, Requena Province, Department of Loreto, Peru. Holotype: MUSM 69403. Paratypes: BMNH 2017.5.25.1-21 (21), 2018.7.5.4-5 (2), MNRJ 52311 (1), ZUFMS 6470 (3). •Valid as Corydoras bethanae Bentley, Grant & Tencatt 2021. •Valid as Brochis bethanae (Bentley, Grant & Tencatt 2021) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis bethanae (Bentley, Grant & Tencatt 2021). Callichthyidae: Corydoradinae. Distribution: South America: Río Blanco drainage, Río Ucayali basin, Department of Loreto, Peru. Habitat: freshwater.

bicarinatus, Chaenothorax Cope [E. D.] 1878:679 [Proceedings of the American Philosophical Society v. 17 (no. 101); ref. 945] Peruvian Amazon near Pebas. Holotype (unique): ANSP 21447. Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:125 [ref. 29155]. •Synonym of Brochis coeruleus Cope 1872 -- (Isbrücker 2001:218 [ref. 26805]). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:159 [ref. 22239], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

bicolor, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:36, Pl. 3 (fig. 3) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Sipaliwini River near border with Brazil, Corantijn River system, Paru Savanna, Nickerie, Suriname. Holotype: ZMA 104627. Paratypes: ZMA 104628-29 (36, 6). Type catalog: Nijssen et al. 1982:42 [ref. 19236], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras bicolor Nijssen & Isbrücker 1967 -- (Nijssen & Isbrücker 1980:201 [ref. 6910], Burgess 1989:365 [ref. 12860], Sands 1995:14 [ref. 22671], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:114 [ref. 29155], Taphorn et al. 2022:44 [ref. 41297], Tencatt et al. 2023:20 [ref. 40562]). •Valid as Hoplisoma bicolor (Nijssen & Isbrücker 1967) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma bicolor (Nijssen & Isbrücker 1967). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers (Guyana, Suriname). Habitat: freshwater.

bifasciatus, Corydoras Nijssen [H.] 1972:420, Fig. 4 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Creek at left bank of Rio Cururu, tributary of upper River Tapajós near Maloca do Conzale, about 7°45'S, 58°00'W, Pará State, Brazil. Holotype: IRSNB 485. Paratypes: IRSNB 486 (orig. 31, now 15), MZUSP [ex IRSNB 486] (16), USNM 205866 (2), ZMA 110394 (30). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Walschaerts 1987:17-18 [ref. 20755], Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras bifasciatus Nijssen 1972 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Ferraris 2007:114 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Tencatt et al. 2022:33 [ref. 39741]). •Valid as Brochis bifasciatus (Nijssen 1972) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis bifasciatus (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: lower Amazon River basin, Brazil. Habitat: freshwater.

bilineatus, Corydoras Knaack [J.] 2002:52, Figs. [Aquaristik aktuell (Germany) 4/2002; ref. 27224] Chené, Santiesteban, Santa Cruz Dept., Bolivia. Holotype: MTD F 25925. Paratypes: CIRA-UTB 1000a-c (7); MTD F 25926 (1), 25927 (1), 25928 (1), 25929 (10); ZMA 123580-82 (3); ZMB 33296-98 (8). Type catalog: Zarske 2003:24 [ref. 27474], Ferraris 2007:114 [ref. 29155] •Valid as Corydoras bilineatus Knaack 2002 -- (Reis in Reis et al. 2003:295 [ref. 27061], Ferraris 2007:114 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Bono et al. 2019:21 [ref. 36480]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus bilineatus (Knaack 2002). Callichthyidae: Corydoradinae. Distribution: South America: Madeira River basin, Bolivia. Habitat: freshwater.

blochi, Corydoras Nijssen [H.] 1971:92, Figs. 2-6 [Beaufortia v. 19 (no. 250); ref. 7698] Moco Creek near Lehtem, 3°18'N, 59°46'W, tributary of Río Tacutú, Río Branco system, Essequibo, Guyana. Holotype: FMNH 75951. Paratypes: BMNH 1926.10.27.308-316 (9), 1970.10.30.1 (1); FMNH 54848 (2); IRSNB 503 (orig. 3, now 2); MBUCV-V-4712 (1), ?V-3937 (3); MZUSP [ex IRSNB 503] (1), MZUSP 8580 (3); ZMA 110675 [ex FMNH] (1), 110723-24 (2, 1), 110799 (2), 111005 (2). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Walschaerts 1987:18 [ref. 20755], Ibarra & Stewart 1987:27 [ref. 12367], Provenzano et al. 1998:6 [ref. 24196], Ferraris 2007:114 [ref. 29155]. A subspecies also described. •Valid as Corydoras blochi Nijssen 1971 -- (Nijssen & Isbrücker 1980:218 [ref. 6910] with subspecies, Burgess 1989:365 [ref. 12860], Grant 1998:45 [ref. 23454], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Ferraris 2007:114 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], Taphorn et al. 2022:44 [ref. 41297], Dias et al. 2024:23 [ref. 41219], Tencatt et al. 2024:21 [ref. 41298]). Current status: Valid as Corydoras blochi Nijssen 1971. Callichthyidae: Corydoradinae. Distribution: South America: northern Brazil, Guyana and Venezuela. Habitat: freshwater.

boehlkei, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1982:139, Figs. 1-4 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 134; ref. 8436] About 20 miles upstream from junction of Río Caura - Río Erebato, Río Cuchime, 5°45'N, 64°24'W, Edo Bolivar, Venezuela, 5°45'N, 64°24'W. Holotype: ANSP 148097. Paratypes: ANSP 149257 (1), ZMA 119046 (1). Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras boehlkei Nijssen & Isbrücker 1982 -- (Burgess 1989:365 [ref. 12860], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:114 [ref. 29155]). •Valid as Hoplisoma boehlkei (Nijssen & Isbrücker 1982) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma boehlkei (Nijssen & Isbrücker 1982). Callichthyidae: Corydoradinae. Distribution: South America: Caura River drainage, Orinoco River basin, Venezuela. Habitat: freshwater.

boesemani, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:37, Pl. 4 (fig. 1) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Little tributaries of Gran Rio between Ligolio and Awaradam Falls, Brokopondo, Suriname. Holotype: RMNH 25316. Paratypes: RMNH 17283 (1, c&s), 25317 (13), 25328 (2), 25789 [ex ZMA 104626] (1); ZMA 104625 (6), 104638 (1). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras boesemani Nijssen & Isbrücker 1967 -- (Nijssen & Isbrücker 1980:211 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:114 [ref. 29155]). •Valid as Hoplisoma boesemani (Nijssen & Isbrücker 1967) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma boesemani (Nijssen & Isbrücker 1967). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in Suriname. Habitat: freshwater.

bolivianus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:75, Figs. 3-4, 10b [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Flooded plain a few kilometers from Trinidad, 14°46'S, 65°50'W, Río Mamoré basin, Beni Province, Bolivia. Holotype: MNHN 1983-0528. Paratypes: ZMA 119100 (1). Type catalog: Isbrücker 1999:59 [ref. 38367], Ferraris 2007:117 [ref. 29155]. Isbrücker 2001:226 [ref. 26805] list as a synonym of geryi, first reviser Isbrücker 1999:59 [ref. 38367] •Valid as Corydoras bolivianus Nijssen & Isbrücker 1983 -- (Burgess 1989:365 [ref. 12860]). •Synonym of Corydoras geryi Nijssen & Isbrücker 1983 -- (Isbrücker 1999:59 [ref. 38367], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155]). •Synonym of Brochis geryi (Nijssen & Isbrücker 1983). Current status: Synonym of Brochis geryi (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Habitat: freshwater.

bolteni, Callichthys callichthys Hoedeman [J. J.] 1952:9 [Beaufortia v. 1 (no. 12); ref. 12773] Suriname. Holotype: ZMA 100303a (head missing). Paratypes: ZMA 100303b (1), 100305 (1), 100307-08 (1, 1), 100313-14 (2, 1). Type catalog: Nijssen et al. 1982:40 [ref. 19236], Ferraris 2007:111 [ref. 29155]. •Synonym of Callichthys callichthys (Linnaeus 1758), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

bondi, Corydoras Gosline [W. A.] 1940:20 [Stanford Ichthyological Bulletin v. 2 (no. 1); ref. 6489] Río Yuruari, 3 kilometers east of El Callao, 7°18'N, 61°50'W, Bolivar, Venezuela. Holotype: CAS-SU 35065. Paratypes: CAS-SU 35066-68 (18, 10, 6); USNM 130633 [ex CAS-SU 35068] (1). Type catalog: Böhlke 1953:45 [ref. 12291], Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras bondi Gosline 1940 -- (Nijssen & Isbrücker 1980:209 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:114 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:[16] [ref. 35679], Taphorn et al. 2022:44 [ref. 41297]). •Valid as Hoplisoma bondi (Gosline 1940) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma bondi (Gosline 1940). Callichthyidae: Corydoradinae. Distribution: South America: Yuruari, Corantijn and Rupununi River basins (Guyana, Suriname and Venezuela). Habitat: freshwater.

breei, Corydoras Isbrücker [I. J. H.] & Nijssen [H.] 1992:10, Figs. 1-2, 5 [Beaufortia v. 43 (no. 2); ref. 20559] Avanavero Falls, Kabalebo River, Corantijn River system, Suriname. Holotype: RMNH 31912. Paratypes: RMNH 25335 (3), 26064-66 (10, 2, 21); ZMA 104654 (1), 107611 (5). Type catalog: Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras breei Isbrücker & Nijssen 1992 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:114 [ref. 29155], Borstein et al. 2022:16 [ref. 39507], Taphorn et al. 2022:44 [ref. 41297]). •Valid as Hoplisoma breei (Isbrücker & Nijssen 1992) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma breei (Isbrücker & Nijssen 1992). Callichthyidae: Corydoradinae. Distribution: South America: Corantijn River basin (Guyana and Suriname). Habitat: freshwater.

brevirostris, Corydoras melanistius Fraser-Brunner [A.] 1947:244 [Proceedings of the Zoological Society of London v. 117 (pt 1); ref. 13085] Orinoco River, Venezuela (aquarium specimen). Holotype (unique): BMNH 1946.10.10.1. Type catalog: Ferraris 2007:114 [ref. 29155]. •Synonym of Corydoras melanistius Regan 1912, but a valid subspecies as described -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:366 [ref. 12860], Grant 1998:43 [ref. 23454]). •Valid as Corydoras brevirostris Fraser-Brunner 1947 -- (Le Bail et al. 2000:192 [ref. 24549] as cf. brevirostris, Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:114 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:72 [ref. 35633], Koerber et al. 2022:47 [ref. 39235], Taphorn et al. 2022:45 [ref. 41297]). •Valid as Hoplisoma brevirostre (Fraser-Brunner 1947) -- (Dias et al. 2024:26 [ref. 41219] as brevirostris). Current status: Valid as Hoplisoma brevirostre (Fraser-Brunner 1947). Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin and coastal drainages in Suriname (Brazil, Colombia, Guyana, Suriname and Venezuela). Habitat: freshwater.

britskii, Brochis Nijssen [H.] & Isbrücker [I. J. H.] 1983:179, Figs. 1-2 [Bulletin Zoölogisch Museum, Universiteit van Amsterdam v. 9 (no. 20); ref. 5387] Lagoas Marginais, rodovia Transpantaneira, Poconé, 16°15'S, 56°37'W, Mato Grosso State, Brazil. Holotype: MZUSP 26811. Paratypes: MZUSP 25083 (3), 26819 (1); ZMA 107853-54 (3, 1). Type catalog: Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras britskii (Nijssen & Isbrücker 1983) -- (Ferraris 2007:114 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Tencatt et al. 2014:78 [ref. 33230], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:549 [ref. 34772], Koerber et al. 2017:57 [ref. 35267]). •Valid as Brochis britskii Nijssen & Isbrücker 1983 -- (Burgess 1989:364 [ref. 12860], Britski et al. 1999:127 [ref. 24147], Isbrücker 2001:218 [ref. 26805], Reis in Reis et al. 2003:293 [ref. 27061], Dias et al. 2024:25 [ref. 41219], Koerber 2024:4 [ref. 41228]). Current status: Valid as Brochis britskii Nijssen & Isbrücker 1983. Callichthyidae: Corydoradinae. Distribution: South America: upper Paraguay River basin (Brazil, Paraguay and Bolivia). Habitat: freshwater.

brittoi, Corydoras Tencatt [L. F. C.] & Ohara [W. M.] 2016:[2], Figs. 1, 2a, 2b, 3a, 3c, 4 [Neotropical Ichthyology v. 14 (no. 1) e150063; ref. 34353] Mato Grosso State, Colniza Municipality, Guariba District, tributary to the rio Guariba, rio Aripuanã drainage, rio Madeira basin, Brazil, 9°06'47.4"S, 60°25'14.1"W. Holotype: MNRJ 43316. Paratypes: INPA, MCP, MZUSP, NUP, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras brittoi Tencatt & Ohara 2016. •Valid as Brochis brittoi (Tencatt & Ohara 2016) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis brittoi (Tencatt & Ohara 2016). Callichthyidae: Corydoradinae. Distribution: South America: Aripuanã River drainage, Madeira River basin, Brazil. Habitat: freshwater.

brunneus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:116, Fig. 7 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Serra do Roncador, kilometer 125 of the road Chavantina-Casximba, Mato Grosso State, Brazil. Holotype: ZMA 113588. Paratypes: USNM 213569 (1), ZMA 109380 (4). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras brunneus Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:578 [ref. 33891], Tencatt et al. 2022:49 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras brunneus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: rivers in Serra do Roncador, Mato Grosso, Brazil. Habitat: freshwater.

burgessi, Corydoras Axelrod [H. R.] 1987:22, Fig. [Tropical Fish Hobbyist v. 35 (no. 12); ref. 9153] Rio Unini, tributary of Rio Negro, Amazonas, Brazil. Holotype: MZUSP 37692. Paratypes: USNM 288461 (2). Type catalog: Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:114 [ref. 29155]. •Valid as Corydoras burgessi Axelrod 1987 -- (Burgess 1989:365 [ref. 12860], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:114 [ref. 29155], Tencatt et al. 2023:20 [ref. 40562]). •Valid as Hoplisoma burgessi (Axelrod 1987) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma burgessi (Axelrod 1987). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Amazonas State, Brazil. Habitat: freshwater.

caelatus, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:308 [Histoire naturelle des poissons v. 15; ref. 1008] Bahia and Rio de Janeiro, Brazil. Syntypes: MNHN 0000-4258 (2), 0000-4259 (1 or 2) Bahia. Type catalog: Bertin & Estève 1950:64 [ref. 19575] as coelatus, Ferraris 2007:111 [ref. 29155]. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:22 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

callichthys, Callichthys Meuschen [F. C.] 1778:39 [ ref. 17682] Original not seen. Not available, published in a rejected work (Opinion 260). Suppressed. Callichthyidae: Callichthyinae.

callichthys, Loricaria Suckow [G. A.] 1799:655 [Naturgeschichte der Thiere v. 4, pt. 1; ref. 18858] New combination for Silurus callichthys Linnaeus 1758; not an original description. •In the synonymy of Callichthys callichthys (Linnaeus 1758) -- (Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

callichthys, Silurus Linnaeus [C.] 1758:307 [Systema Naturae, Ed. X v. 1; ref. 2787] American rivers. Syntypes (?): BMNH 1853.11.12.194 (1, left half skin); NRM 7015 (2), 7018 (1); ZMUU 55 (1). Type information: Wheeler 1989:210-211, Fig. 2B [ref. 21873]. Type catalog: Ferraris 2007:110 [ref. 29155]. Spelled callychthis in Bloch 1794, pl. 377. The neotype selection by Knaack 2008:21 [ref. 29619] is rejected until possible syntypes are investigated; these potential syntypes have been listed in the Catalog of Fishes database and in Ferraris 2007:110 [ref. 29155] - references not cited by Knaack. •Valid as Callichthys callichthys (Linnaeus 1758) -- (Ovchynnyk 1967:36 [ref. 37559], Ortega & Vari 1986:16 [ref. 9708], see Malabarba 1989:146 [ref. 14217], Burgess 1989:364 [ref. 12860], Gómez & Chebez 1996:61 [ref. 23791], Torelli et al. 1997:70 [ref. 24612], Britski et al. 1999:124 [ref. 24147], Fuller et al. 1999:218 [ref. 25838], Le Bail et al. 2000:178 [ref. 24549], Marín 2000:69 [ref. 26252], Lasso et al. 2001:97 [ref. 25928], Camargo & Isaac 2001:145 [ref. 27639], Reis in Reis et al. 2003:293 [ref. 27061], López et al. 2003:42 [ref. 27366], Casciotta et al. 2003:130 [ref. 28130], Trajano et al. 2004:317 [ref. 27653], Menni 2004:81 [ref. 28131] as Callichtys, Ferraris 2007:110 [ref. 29155], Knaack 2008:21 [ref. 29619], Di Dario et al. 2013:262 [ref. 37503], Phillip et al. 2013:18 [ref. 32896], Barriga Salazar 2014:111 [ref. 35745], Litz & Koerber 2014:22 [ref. 33622], Ramos et al. 2014:4 [ref. 35321], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:39 [ref. 35117], Bertaco et al. 2016:416 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Koerber et al. 2017:55 [ref. 35267], DoNascimiento et al. 2017:72 [ref. 35633], Azevedo-Santos et al. 2019:5 [ref. 36506], Brosse et al. 2019:134 [ref. 38320], Dickens 2019:171 [ref. 37135], Azevedo-Santos et al. 2020:5 [ref. 39606], Reis et al. 2020:464 [ref. 38364], Silva et al. 2020:10 [ref. 37809], Meza-Vargas et al. 2021:24 [ref. 39298], Brandão et al. 2022:151 [ref. 40464] as Callychthys callychthys, Koerber et al. 2022:45 [ref. 39235], Taphorn et al. 2022:44 [ref. 41297], Giora & Wingert 2023:60 [ref. 41026], Loureiro et al. 2023:92 [ref. 40506], Quintela et al. 2023:6 [ref. 40727], Vieira et al. 2023:20 [ref. 40759], Limeira-Filho et al. 2024:7 [ref. 41573], Vieira-Guimarães et al. 2024:43 [ref. 41258]). Current status: Valid as Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Distribution: Widespread in Atlantic drainages of South America. IUCN (2023): Least Concern. Habitat: freshwater.

caquetae, Corydoras Fowler [H. W.] 1943:248, Figs. 26-27 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 95; ref. 1443] Río Orteguasa at Florencia, 1°37'N, 75°37'W, Caquetá, Colombia. Holotype (unique): ANSP 70509. Type catalog: Böhlke 1984:31 [ref. 13621], Ferraris 2007:119 [ref. 29155]. •Synonym of Corydoras leucomelas Eigenmann & Allen 1942 -- (Nijssen & Isbrücker 1980:198 [ref. 6910], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155]). •Synonym of Hoplisoma leucomelas (Eigenmann & Allen 1942). Current status: Synonym of Hoplisoma leucomelas (Eigenmann & Allen 1942). Callichthyidae: Corydoradinae. Habitat: freshwater.

caramater, Corydoras Tencatt [L. F. C.], Couto [O. L. P.], Santos [S. A. dos] & Sousa [L. M.] 2024:4, Figs. 1-13, 16 [Neotropical Ichthyology v. 22 (no. 1); ref. 40850] Rio Bacajaí, rio Xingu basin, Senador José Porfírio, Pará, Brazil, 03°53'30"S, 51°43'13"W. Holotype: MNRJ 54621. Paratypes: CITL, CPUFMT, INPA, LIA, MZUSP, NUP. Plus additional non-type material. •Valid as Corydoras caramater Tencatt, Couto, Santos & Sousa 2024 -- (Dias et al. 2024:23 [ref. 41219], Tencatt et al. 2024:21 [ref. 41298]). Current status: Valid as Corydoras caramater Tencatt, Couto, Santos & Sousa 2024. Callichthyidae: Corydoradinae. Distribution: South America: Xingu River tributaries draining the region of the Volta Grande do Xingu and upper Tapajós River drainage in the region of Jacareacanga, Pará State, Brazil Habitat: freshwater.

carlae, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:76, Figs. 5, 10c [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Small arroyo, left bank tributary of Río Iguazu, 50 kilometers from Puerto Iguazu, Paraná basin, Misiones Province, Argentina. Holotype: IRSNB 688. Paratypes: ZMA 119101 (1). Type catalog: Walschaerts 1987:18 [ref. 20755], Ferraris 2007:115 [ref. 29155] •Valid as Corydoras carlae Nijssen & Isbrücker 1983 -- (Burgess 1989:365 [ref. 12860], Miquelarena et al. 1997:70 [ref. 23469], Gómez & Chebez 1996:62 [ref. 23791], Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], López et al. 2003:42 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:115 [ref. 29155], Calviño & Alonso 2010:199 [ref. 30829], Tencatt et al. 2014:78 [ref. 33230], Tencatt et al. 2014:91 [ref. 33232], Mirande & Koerber 2015:40 [ref. 35117], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Grant 2018:26 [ref. 36057], Reis et al. 2020:464 [ref. 38364]). •Valid as Hoplisoma carlae (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma carlae (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: Iguaçu River basin (Brazil and Argentina). Habitat: freshwater.

carvalhoi, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:117, Fig. 8 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Açude Canabrava, Aracoiaba River drainage, Guaramiranga, Ceará State, Brazil. Holotype: MNRJ 5230. Paratypes: ZMA 113589 (1). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras carvalhoi Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:585 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:51 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras carvalhoi Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: Aracoiaba River drainage, Ceará State, Brazil. Habitat: freshwater.

cataphractus, Callichthys Meuschen [F. C.] 1778:39 [ ref. 17682] Original not seen. Not available, published in a rejected work (Opinion 260). Suppressed. Callichthyidae: Callichthyinae.

caudimaculatus, Corydoras Rössel [F.] 1961:49, Pl. 5 (figs. 1-2) [Senckenbergiana Biologica v. 42 (nos 1/2); ref. 9377] Main stream of upper Rio Guaporé, Rondônia, Brazil. Holotype: SMF 5291. Paratypes: NMW 61145 [ex SMF 5297] (1); SMF 5292-97 (6). Type information: Knaack 2003:16 [ref. 27879]. Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras caudimaculatus Rössel 1961 -- (Nijssen & Isbrücker 1980:199 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Knaack 2007:43 [ref. 29221], Ferraris 2007:115 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Hoplisoma caudimaculatum (Rössel 1961) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma caudimaculatum (Rössel 1961). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

cayennae, Hoplosternum thoracatum Hoedeman [J. J.] 1961:130 [Bulletin of Aquatic Biology v. 2 (no. 23); ref. 11969] Cayenne Island, French Guiana. Holotype: ZMA 102238a. Paratypes: ZMA 102238b (3). Type catalog: Nijssen et al. 1982:54 [ref. 19236], Ferraris 2007:128 [ref. 29155]. •Synonym of Hoplosternum thoracatum (Valenciennes 1840), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:303 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

cervinus, Corydoras Rössel [F.] 1962:31, Figs. 1-2 [Senckenbergiana Biologica v. 43 (no. 1); ref. 19255] Main stream of upper Rio Guaporé, Rondônia, Brazil. Holotype: SMF 5460. Paratypes: SMF 5461 (1). Type information: Knaack 2003:16 [ref. 27879]. Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras cervinus Rössel 1962 -- (Nijssen & Isbrücker 1980:217 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras cervinus Rössel 1962. Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

chiquitos, Callichthys Castelnau [F. L.] 1855:38, Pl. 18 (fig. 2) [Animaux nouveaux or rares v. 2; ref. 766] Vicinity of the dry swamps, Province of Chiquitos, Bolivia. Holotype (unique): MNHN 0000-4285. Type catalog: Bertin & Estève 1950:67 [ref. 19575], Ferraris 2007:128 [ref. 29155]. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

cochui, Corydoras Myers [G. S.] & Weitzman [S. H.] 1954:93, Fig. [Aquarium Journal v. 25 (no. 4) (for Apr. 1954); ref. 12425] Rio Araguay, Santa Maria Nova, Goyaz, Brazil. Holotype: CAS-SU 47656. Paratypes: CAS-SU 47657 (2). Authors' record of "a third paratype" should read "a third lot of four additional specimens" (cf. Weitzman 1956:14-15 [ref. 12426] but not Nijssen & Isbrücker 1980:206 [ref. 6910]). Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras cochui Myers & Weitzman 1954 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:223 [ref. 26805], Britto & Castro 2002:1012 [ref. 26509], Reis in Reis et al. 2003:296 [ref. 27061], Knaack 2004:000 [ref. 28306], Ferraris 2007:115 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Britto 2016:[1] [ref. 34336], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma cochui (Myers & Weitzman 1954) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma cochui (Myers & Weitzman 1954). Callichthyidae: Corydoradinae. Distribution: South America: upper Araguaia River basin, Brazil. Habitat: freshwater.

coeruleus, Brochis Cope [E. D.] 1872:277, Pls. 7 (figs. 2a-b), 9 (fig. 3) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributary of Río Ambyiacu [= Rio ampiyacu], Peru. Lectotype: ANSP 8231. Paralectotypes: ANSP 8232-37 (6). Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:125 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1970:157-158 [ref. 22239]. •Valid as Brochis coeruleus Cope 1872 -- (Ovchynnyk 1967:36 [ref. 37559] as couruleus). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:157 [ref. 22239], Burgess 1989:364 [ref. 12860], Isbrücker 2001:218 [ref. 26805], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

colossus, Corydoras Tencatt [L. F. C.], Grant [S.] & Bentley [R. F.] 2023:3, Figs. 1-11 [Neotropical Ichthyology v. 21 (no. 4): e230105; ref. 40652] Rio Jutaí, reportedly near confluence with Rio Solimões, Rio Amazonas basin, Jutaí, Amazonas, Brazil, circa 02°45'S, 66°48'W. Holotype: MNRJ 54421. Paratypes: BMNH, CITL, CPUFMT, INPA, MZUSP, NUP. •Valid as Corydoras colossus Tencatt, Grant & Bentley 2023. •Valid as Hoplisoma colossus (Tencatt, Grant & Bentley 2023) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma colossus (Tencatt, Grant & Bentley 2023). Callichthyidae: Corydoradinae. Distribution: South America: Jutaí River drainage, Amazon basin, Amazonas State, Brazil. Habitat: freshwater.

concolor, Corydoras Weitzman [S. H.] 1961:105, Figs. 1-2 [Proceedings of the Biological Society of Washington v. 74; ref. 9388] Las Mangas, in a tributary of Río Parguaza, western Bolivar State, Venezuela, 6°20'N, 67°10'W. Holotype: CAS-SU 54131. Paratypes: CAS-SU 54132-33 (1, 4); ZMA 111426 (1). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Ferraris 2007:115 [ref. 29155] •Valid as Corydoras concolor Weitzman 1961 -- (Nijssen & Isbrücker 1980:199 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Ohara et al. 2016:549 [ref. 34772], DoNascimiento et al. 2017:72 [ref. 35633]). •Valid as Hoplisoma concolor (Weitzman 1961) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma concolor (Weitzman 1961). Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin, Venezuela and Colombia. Habitat: freshwater.

condiscipulus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1980:494, Fig. 1 [Netherlands Journal of Zoology v. 30 (no. 3); ref. 8680] Cumuri Creek, at left bank of Oyapock River, upstream of first rapids of Grande Roche, French Guiana. Holotype: IRSNB 617. Paratypes: IRSNB 492 (2), 494 (1), 497 (orig. 15, now 8); MNHN 1979-0539 to 0544 (1, 2, 1, 1, 2, 1); MZUSP [ex IRSNB 497] (7); USNM 205869 (2); ZMA 110590 (2), 110594 (6), 115332-34 (1, 1, 1), 115355 (2). Type catalog: Nijssen et al. 1982:44 [ref. 19236], Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras condiscipulus Nijssen & Isbrücker 1980 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:365 [ref. 12860], Le Bail et al. 2000:194 [ref. 24549], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis condiscipulus (Nijssen & Isbrücker 1980) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis condiscipulus (Nijssen & Isbrücker 1980). Callichthyidae: Corydoradinae. Distribution: South America: Oyapock River basin, Brazil and French Guiana. Habitat: freshwater.

copei, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1986:70, Figs. 11, 33C [Revue française d'Aquariologie Herpétologie v. 12 (no. 3) [for 1985]; ref. 8061] Downstream of Río Huytoyacu, right tributary of Río Pastaza, about 40 kilometers north of Lago Rimachi, 4°13'S, 76°38'W, Peru. Holotype: ZMA 119305. Paratypes: ZMA 119306 (4). Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras copei Nijssen & Isbrücker 1986 -- (Burgess 1989:365 [ref. 12860], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma copei (Nijssen & Isbrücker 1986) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma copei (Nijssen & Isbrücker 1986). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon basin (Peru and Ecuador). Habitat: freshwater.

coppenamensis, Corydoras bondi Nijssen [H.] 1970:19, Fig. 8 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at left bank of Coppename River system, 3°52'N, 56°55'W, District Saramacca, Suriname. Holotype: ZMA 105877. Paratypes: BMNH 1970.6.16.2 (?1), 1970.6.16.8 (1); CAS 14499 [ex ZMA 105.873] (2); FMNH 69991 (2); ICN-MHN 1106 (5); IRSNB 467 (8); MBUCV-V-6494 (2); MSNG 43425 [ex ZMA 105872] (2); MZUSP (5); NMW 61106 (9); RMNH 25821 (2); UMMZ 108784 (5); USNM 202129 (5); ZMA 105858 (1), 105872 (239, now 217), 105873-75 (192, 142, 9). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Ibarra & Stewart 1987:27 [ref. 12367], Ferraris & Vari 1992:13 [ref. 19771], Provenzano et al. 1998:6 [ref. 24196], Ferraris 2007:115 [ref. 29155], Mojica & Agudelo-Zamora 2018:30 [ref. 36127]. •Synonym of Corydoras bondi Gosline 1940, but a valid subspecies as described -- (Nijssen & Isbrücker 1980:209 [ref. 6910], Burgess 1989:365 [ref. 12860]). •Valid as Corydoras coppenamensis Nijssen 1970 -- (Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma coppenamense (Nijssen 1970) -- (Dias et al. 2024:26 [ref. 41219] as coppenamensis). Current status: Valid as Hoplisoma coppenamense (Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: Coppename River basin, Suriname. Habitat: freshwater.

coriatae, Corydoras Burgess [W. E.] 1997:140, Figs. [Tropical Fish Hobbyist v. 45 (no. 8, no. 494); ref. 22704] Río Aguaytia, branch of the Río Ucayali, in jungles west of city of Pucallpa, Peru. Holotype: MUSM 10701. Paratypes: MUSM 10702 (2); USNM 343866 (2). Type catalog: Ferraris 2007:115 [ref. 29155]. 5388, 22704 •Valid as Corydoras coriatae Burgess 1997 -- (Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:223 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], Meza-Vargas et al. 2021:25 [ref. 39298], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras coriatae Burgess 1997. Callichthyidae: Corydoradinae. Distribution: South America: Ucayali River basin, upper Amazon tributary (Peru). Habitat: freshwater.

cortesi, Corydoras Castro [D. M.] 1987:31, Figs. 1, 3a; Pl. 3 (fig. 1) [Boletin Ecotrópica. No. 16; ref. 16225] Río Arauca near Arauca, Intendencia de Arauca, 7°03'N, 70°46'W, Colombia. Holotype: UBJTL MM671. Paratypes: UBJTL MM671.1 (3). Type catalog: Ferraris 2007:124 [ref. 29155]. •Synonym of Corydoras septentrionalis Gosline 1940 -- (Isbrücker 1999:41 [ref. 24040], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155]). •Valid as Corydoras cortesi Castro 1987 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:224 [ref. 26805], Tencatt & Ohara 2016:432 [ref. 34627], Cortés Hernández et al. 2023:456 [ref. 40760] as cf. cortesi, Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras cortesi Castro 1987. Callichthyidae: Corydoradinae. Distribution: South America: Colombia endemic. Habitat: freshwater.

costai, Corydoras Ottoni [F. P.], Barbosa [M. A.] & Katz [A. M.] 2016:133, Figs. 1, 2, 5-8 [Spixiana (München) v. 39 (no. 1); ref. 34756] Swamp on BR-030, 3 km east from Guanambi, Município de Guanambi, Estado da Bahia, Brazil, 14°11'08"S, 42°44'20"W, elevation 522 meters. Holotype: UFRJ 7790. Paratypes: MCP, UFRJ. •Valid as Corydoras costai Ottoni, Barbosa & Katz 2016 -- (Silva et al. 2020:10 [ref. 37809]). •Valid as Brochis costai (Ottoni, Barbosa & Katz 2016) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis costai (Ottoni, Barbosa & Katz 2016). Callichthyidae: Corydoradinae. Distribution: South America: São Francisco river basin (northeastern Brazil). Habitat: freshwater.

crimmeni, Corydoras Grant [S.] 1997:44, Photos 3-4 [The Aquarist and Pondkeeper v. 62 (no. 10) (for 1998); ref. 23454] Aquarium specimens said to be from near the town of Boa Vista, Roraima State, Brazil [possibly from the Rio Branco]. Holotype: MZUSP 52490 [currently BMNH 1997.10.23.3]. Paratypes: BMNH 1997.10.23.4-8 (5). Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras crimmeni Grant 1997 -- (Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis crimmeni (Grant 1997) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis crimmeni (Grant 1997). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.

cruziensis, Corydoras Knaack [J.] 2002:63, Figs. [VDA--aktuell 2002 (no. 3); ref. 27232] Guarayos, Santa Cruz Department, Bolivia, 16°20.014'S, 62°50.912'W, elevation 215 meters. Holotype: MTD F 25930. Paratypes: (46) CIRA-UTB 1000a-c (2, 2, 8), ZMA 123580-82 (2, 2, 7), ZMB 33299-301 (2, 2, 8). Type catalog: Zarske 2003:24 [ref. 27474], Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras cruziensis Knaack 2002 -- (de Pinna & Wosiacki in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:115 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Hoplisoma cruziense (Knaack 2002) -- (Dias et al. 2024:26 [ref. 41219] as cruziensis). Current status: Valid as Hoplisoma cruziense (Knaack 2002). Callichthyidae: Corydoradinae. Distribution: South America: Madeira River basin, Santa Cruz and Beni Departments, Bolivia. Habitat: freshwater.

crypticus, Corydoras Sands [D. D.] 1995:11, Fig. 4 [Freshwater and Marine Aquarium v. 18 (no. 7); ref. 22671] Rio Miuã system of streams, possibly the Uarinabe stream, 10-12 kilometers from its confluence of the upper Negro River, Brazil. Holotype: LIVCM 1994.4.29. Paratypes: LIVCM 1994.4.30-34 (5). Type catalog: Ferraris 2007:115 [ref. 29155]. •Valid as Corydoras crypticus Sands 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:115 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633]). •Valid as Brochis crypticus (Sands 1995) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis crypticus (Sands 1995). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil and Colombia. Habitat: freshwater.

daillyi, Hoplosternum littorale Hoedeman [J. J.] 1952:7 [Beaufortia v. 1 (no. 12); ref. 12773] Near Paramaribo, Suriname. Holotype: ZMA 100277a. Paratypes: ZMA 100277b (1), 100261 (1), 100281-86 (2, 1, 1, 1, 1, 1). Type catalog: Nijssen et al. 1982:53-54 [ref. 19236], Ferraris 2007:128 [ref. 29155] •Synonym of Hoplosternum littorale (Hancock 1828), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:303 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

davidsandsi, Corydoras Black [B.] 1987:74, Fig. [Practical Fishkeeping 1987; ref. 16219] Rio Unini, whitewater area of the Rio Negro, Brazil. Holotype: MZUSP 38632. Paratypes: MZUSP (3). Type catalog: Ferraris 2007:116 [ref. 29155] •Valid as Corydoras davidsandsi Black 1987 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:116 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma davidsandsi (Black 1987) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma davidsandsi (Black 1987). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.

delphax, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:55, Fig. 3 [Beaufortia v. 33 (no. 5); ref. 8293] Guainía, River Inírida system, Caño Bacón, Pueblo Bretania, 3°43'N, 67°59'W, Colombia. Holotype: NRM 26073 [1972222.3251]. Paratypes: NRM 26074 (5); ZMA 119063 (2). Type catalog: Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras delphax Nijssen & Isbrücker 1983 -- (Burgess 1989:365 [ref. 12860], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:116 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633]). •Valid as Brochis delphax (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis delphax (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: Inírida and upper Orinoco River basins, Colombia. Habitat: freshwater.

demararae, Callichthys callichthys Hoedeman [J. J.] 1952:10 [Beaufortia v. 1 (no. 12); ref. 12773] Demarara, Guyana. Holotype: ZMA 100304. Type catalog: Nijssen et al. 1982:40 [ref. 19236], Ferraris 2007:111 [ref. 29155]. Based also on specimens described by Eigenmann 1912 (not investigated for type status). •Synonym of Callichthys callichthys (Linnaeus 1758), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

depinnai, Aspidoras Britto [M. R.] 2000:1049, Figs. 1-5 [Copeia 2000 (no. 4); ref. 25022] Creek at Amaraji-Primavera road, rio Ipojuca basin, 8°21'S, 35°26'W, Pernambuco State, Brazil. Holotype: MZUSP 56214. Paratypes: MCP 23706 (4); MZUSP 53717-18 (1, 1), 56215 (4), 56216 (3, c&s); UMMZ 235432 (3). Type catalog: Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras depinnai Britto 2000 -- (Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Wosiacki et al. 2014:315 [ref. 33356], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:53 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras depinnai Britto 2000. Callichthyidae: Corydoradinae. Distribution: South America: Ipojuca and Ipanema River basins, Pernambuco State, Brazil. Habitat: freshwater.

depressus, Cataphractus Swainson [W.] 1839:304 [The natural history and classification v. 2; ref. 4303] Type locality not stated. No types known. Type catalog: Ferraris 2007:111 [ref. 29155]. Based on Bloch, pl. 377 -- which is Bloch 1794:Pl. 377 [ref. 463]. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061] Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

desana, Corydoras Lima [F. C. T.] & Sazima [I.] 2017:20, Figs. 1-3, 4a [aqua, International Journal of Ichthyology v. 23 (no. 1); ref. 35111] Igarapé Castanha, tribitary of rio Tiquié, village of Santa Rosa, São Gabriel da Cachoeira, Amazonas, Brazil, 0°4'38"N, 69°41'27"W. Holotype: MZUSP 121044. Paratypes: ANSP, INPA, LBP, MCP, MNRJ, MZUSP, ZUEC. Plus aditional non-type material. •Valid as Corydoras desana Lima & Sazima 2017 -- (Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras desana Lima & Sazima 2017. Callichthyidae: Corydoradinae. Distribution: South America: Rio Tiquié drainage, upper Rio Negro basin, Amazonas, Brazil. Habitat: freshwater.

deweyeri, Corydoras griseus Meinken [H.] 1957:5, Fig. [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 10 (no. 1); ref. 12156] Guyana. Lectotype: ZMH H1186. Paralectotype: ZMH H1187 (1). Type catalog: Wilkens 1977:159 [ref. 22013], Ferraris 2007:118 [ref. 29155], Grant 2021:17 [ref. 38629]. Lectotype selected by Nijssen & Isbrücker 1967:35 [ref. 7981]. Original spelling de weyeri; correction mandatory. Paralectotype may belong to different species; see Grant 2021:17 [ref. 38629]. •Synonym of Corydoras griseus Holly 1940 -- (Nijssen & Isbrücker 1980:210 [ref. 6910], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155]). •Valid as Corydoras deweyeri Meinken 1957 -- (Grant 2021:17 [ref. 38629], Taphorn et al. 2022:45 [ref. 41297]). •Valid as Brochis deweyeri (Meinken 1957) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis deweyeri (Meinken 1957). Callichthyidae: Corydoradinae. Distribution: South America: Guyana endemic. Habitat: freshwater.

difluviatilis, Corydoras Britto [M. R.] & Castro [R. M. C.] 2002:1007, Figs. 1-3 [Copeia 2002 (no. 4); ref. 26509] Córrego Paulicéia, tributary of rio Pardo, rio Paraná system, 21°38'S, 47°38'W, Gleba Pé-do-Gigante, Parque Estadual de Vassununga, Mun. de Santa Rita do Passa Quatro, São Paulo, Brazil. Holotype: MZUSP 75268. Paratypes: LIRP 41 (2), 171 (1), 333 (1), 816-17 (1, 31); MCP 20815 (3); MNRJ 19735-36 (1, 2), 19737 (12, 3 c&s), 19738-39 (6, 1), 19909-13 (6, 13 [3 c&s], 1, 2, 1); MZUSP 49226 (4), 51485 (2), 51487 (5), 51496 (5), 52909-10 (1, 1), 75269 (1); UFRJ 4655 (1); UMMZ 234253 (2). Type catalog: Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras difluviatilis Britto & Castro 2002 -- (Reis in Reis et al. 2003:297 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Ferraris 2007:116 [ref. 29155], Tencatt et al. 2013:261 [ref. 32752], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], Ohara et al. 2016:549 [ref. 34772], Tencatt et al. 2024:23 [ref. 40850]). •Valid as Brochis difluviatilis (Britto & Castro 2002) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis difluviatilis (Britto & Castro 2002). Callichthyidae: Corydoradinae. Distribution: South America: Paraná River drainage and São Francisco drainage, Brazil. Habitat: freshwater.

diphyes, Corydoras Axenrot [T. E.] & Kullander [S. O.] 2003:258, Fig. 5 [Ichthyological Exploration of Freshwaters v. 14 (no. 3); ref. 27393] Small stream (arroyo) at Estancia María Belén, 8 kilometers from Colonel Patricio Colman, 25°40'13"S, 55°05'52"W, río Paraná drainage, Depto. Caaguazú, Paraguay. Holotype: MNHNP uncat. [ex. NRM 43483]. Paratypes: (621 specimens) MHNG 2482.23 (2); NRM 41765 (1), 41798 (15), 41826 (1), 41928 (3), 41930 (1), 42062 (18), 42094 (75), 42096 (101), and others at NRM. Type catalog: Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras diphyes Axenrot & Kullander 2003 -- (Knaack 2004:108 [ref. 28306], Ferraris 2007:116 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Koerber et al. 2017:57 [ref. 35267]). •Valid as Hoplisoma diphyes (Axenrot & Kullander 2003) -- (Dias et al. 2024:26 [ref. 41219], Koerber 2024:5 [ref. 41228]). Current status: Valid as Hoplisoma diphyes (Axenrot & Kullander 2003). Callichthyidae: Corydoradinae. Distribution: South America: Monday and Acaray River drainages, Paraná River basin (Paraguay). Habitat: freshwater.

dipterus, Brochis Cope [E. D.] 1872:278 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributaries of Río Ambyiacu [Rio Ampiyacu], Peru. Holotype (unique): ANSP 117172. Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:125 [ref. 29155]. •Synonym of Brochis coeruleus Cope 1872 -- (Isbrücker 2001:218 [ref. 26805]). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:157 [ref. 22239], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

dubius, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:38, Pl. 4 (fig. 2) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Surroundings of Paramaribo, Suriname [probably Peru or French Guiana] (aquarium specimens). Holotype: ZMA 104632. Paratypes: ZMA 110633 (15). Type catalog: Nijssen et al. 1982:44 [ref. 19236], Ferraris 2007:126 [ref. 29155]. •Uncertain in genus Corydoras -- (Grant 2022:13 [ref. 39178]). •Synonym of Corydoras trilineatus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:126 [ref. 29155]). •Synonym of Hoplisoma trilineatum (Cope 1872). Current status: Synonym of Hoplisoma trilineatum (Cope 1872). Callichthyidae: Corydoradinae. Habitat: freshwater.

dukei, Hoplosternum Emmens [C. W.] & Axelrod [H. R.] 1968:40, Fig. [Catfish; ref. 19659] Not available, no description or definition (Art. 13.1.1 of the Code). Nomen Nudum. Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.

duplicareus, Corydoras Sands [D. D.] 1995:12, Fig. 6 [Freshwater and Marine Aquarium v. 18 (no. 7); ref. 22671] Rio Poranga, 8 kilometers north of the Nobua oba, prior to where it joins a small tributary of the upper Negro River, Brazil. Holotype: LIVCM 1994.4.36. Paratypes: LIVCM 1994.4.37 (1). •Valid as Corydoras duplicareus Sands 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Britto & Lima 2003:89 [ref. 27314]). •Valid as Hoplisoma duplicareum (Sands 1995) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma duplicareum (Sands 1995). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

ehrhardti, Corydoras Steindachner [F.] 1910:60 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 47 (no. 8) (for 10 Mar. 1910); ref. 14813] Affluents from Jaraguá mountains, near Joinville, 26°21'S, 48°49'W, Santa Catarina State, Brazil. Lectotype: NMW 61104 [ex NMW 46716]. Paralectotypes: BMNH 1910.3.17.1 (1); MNHN 1910-0160 to 0162 (3); MZUT 1324 (1); NMW 45446 (5), 46711 (6), 46703 (2), 46713 (6), 46716/46718 (?31 + 13); SMNS 4524 (2); ZMA 110470 [ex NMW 46718] (5); ZSM 4813 [ex NMW 46716] (1), ZSM 17983 [ex NMW] (1). Type catalog: Tortonese 1940:136 [ref. 21559], Bertin & Estève 1950:65 [ref. 19575], Nijssen et al. 1982:205 [ref. 19236], Fricke 1995:6 [ref. 28100], Fricke 2005:19 [ref. 29864], Ferraris 2007:116 [ref. 29155], Neumann 2011:242 [ref. 31652]. Lectotype selected by Nijssen & Isbrücker 1980:205 [ref. 6910]. •Valid as Corydoras ehrhardti Steindachner 1910 -- (Nijssen & Isbrücker 1980:205 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Axenrot & Kullander 2003:265 [ref. 27393] as cf. aff. ehrhardti, Shimabukuro-Dias et al. 2004:141 [ref. 27796], Ferraris 2007:116 [ref. 29155], Britski & Mendonça 2010:91 [ref. 30773], Tencatt et al. 2014:78 [ref. 33230], Tencatt et al. 2014:91 [ref. 33232], Koerber et al. 2015:3 [ref. 35179], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], Koerber et al. 2017:6 [ref. 35083], Koerber et al. 2017:7 [ref. 35632], Koerber et al. 2019:7 [ref. 36736], Mirande & Koerber 2020:2 [ref. 37594], Reis et al. 2020:464 [ref. 38364]). •Valid as Hoplisoma ehrhardti (Steindachner 1910) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma ehrhardti (Steindachner 1910). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in Santa Catarina and Paraná states and Iguaçu River basin (Brazil and Argentina). Habitat: freshwater.

eigenmanni, Chaenothorax Ellis [M. D.] 1913:393, Pl. 26 (fig. 2) [Annals of the Carnegie Museum v. 8 (nos 3-4) (art. 13); ref. 1270] São Luiz de Cáceres, Mato Grosso State, Brazil. Holotype: FMNH 54880 [ex CM 3542]. Paratypes: FMNH 54881 [ex CM 3543] (1). Type catalog: Henn 1928:83 [ref. 12305], Ibarra & Stewart 1987:22 [ref. 12367], Ferraris 2007:125 [ref. 29155]. •Valid as Brochis eigenmanni (Ellis 1913) -- (Isbrücker 2001:218 [ref. 26805]). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:159 [ref. 22239], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

eigenmanni, Corydoras Ihering [R. von] 1907:34 [35] [Notas preliminares; editadas pela redaccão da Revista do Museu Paulista v. 1 (fasc. 1); ref. 2294] Cubatao or Raiz da Serra, Estado de São Paulo, Brazil. Lectotype: MZUSP [ex DZSASP] 153. Paralectotypes: BMNH 1907.7.6.2-4 (3); CAS 36384 [ex IU 10795a, ex CAS 24752] (1), 36453 [ex IU 10795, ex CAS 24753] (1, missing); NMW 46732 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. Portuguese on p. 35. Lectotype selected by Britski 1969:206 [ref. 12401]. Prior lectotype designation by Ellis 1913:409 [ref. 1270] of IU 10795 does not clearly specify which of two specimens is to be considered as "type" and is, therefore, not valid. •Valid as Corydoras eigenmanni Ihering 1907 -- (Isbrücker 2001:224 [ref. 26805]). •Synonym of Corydoras barbatus (Quoy & Gaimard 1824) -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Reis in Reis et al. 2003:295 [ref. 27061]). •Synonym of Scleromystax barbatus (Quoy & Gaimard 1824) -- (Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Scleromystax barbatus (Quoy & Gaimard 1824). Callichthyidae: Corydoradinae. Habitat: freshwater.

elegans, Corydoras Steindachner [F.] 1876:141 [93] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River at Tefé, Amazonas, Brazil. Lectotype: NMW 46729. Paralectotypes: BMNH 1889.11.14.55-60 (4 or 6); MCZ 7749 (91), 8205 (28), 36103 (2), 49375 (193, now 159), 89497 (24); MNHN 1989-0276/0279 (5); MNRJ 8547 (2); NMW 46730 (4), ?46731 (4), ?64691 (6); USNM 41531 (2), 41532 (2), 120252 (6), 216716 (10); ZMA 114.921 (10); ZMUC P30119-25 (7). Type catalog: Ferraris & Vari 1992:13 [ref. 19771], Miranda Ribeiro 1959:11 [ref. 10392], Ferraris 2007:116 [ref. 29155]. On p. 93 of separate. Lectotype selected by Nijssen & Isbrücker 1980:213 [ref. 6910]. •Valid as Corydoras elegans Steindachner 1876 -- (Nijssen & Isbrücker 1980:213 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061] dated 1877, Knaack 2002:52 [ref. 27224] dated 1877, Ferraris 2007:116 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], DoNascimiento et al. 2017:73 [ref. 35633], Bono et al. 2019:20 [ref. 36480], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus elegans (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Brazil, Ecuador, Bolivia, Colombia and Peru). Habitat: freshwater.

ellisae, Corydoras Gosline [W. A.] 1940:17 [Stanford Ichthyological Bulletin v. 2 (no. 1); ref. 6489] Arroyo Poná at Sapucay, Rio Paragury system near Asuncion, Paraguay. Holotype: FMNH 57361 [ex CM 3522]. Paratypes: FMNH 57360 [ex CM 3521] (1) Type catalog: Ibarra & Stewart 1987:27 [ref. 12367], Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras ellisae Gosline 1940 -- (Nijssen & Isbrücker 1980:216 [ref. 6910], Burgess 1989:365 [ref. 12860], Gómez & Chebez 1996:62 [ref. 23791], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:225 [ref. 26805], López et al. 2003:42 [ref. 27366], Reis in Reis et al. 2003:297 [ref. 27061], Menni 2004:82 [ref. 2813], Ferraris 2007:116 [ref. 29155], Calviño & Alonso 2010:199 [ref. 30829], Tencatt et al. 2014:78 [ref. 33230], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:40 [ref. 35117], Koerber et al. 2017:57 [ref. 35267]). •Synonym of Corydoras aurofrenatus Eigenmann & Kennedy 1903 -- (Tencatt et al. 2020:16 [ref. 37986]). Current status: Synonym of Corydoras aurofrenatus Eigenmann & Kennedy 1903. Callichthyidae: Corydoradinae. Habitat: freshwater.

ephippifer, Corydoras Nijssen [H.] 1972:422, Fig. 5 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Cachoera Creek at right bank of Rio Amapari, 4 kilometers downstream of Casa do 7, Amapa State, Brazil. Holotype: IRSNB 507. Paratypes: IRSNB 508-510 (now 2, now 1, 1); MZUSP [ex IRSNB 508] (2), [ex IRSNB 509] (2); ZMA 111082-83 (3, 3). Type catalog: Nijssen et al. 1982:44 [ref. 19236], Walschaerts 1987:18 [ref. 20755], Ferraris 2007:116 [ref. 29155]. •Valid as Corydoras ephippifer Nijssen 1972 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:116 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis ephippifer (Nijssen 1972) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis ephippifer (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: Amapá State, Brazil. Habitat: freshwater.

episcopi, Corydoras Eigenmann [C. H.] & Allen [W. R.] 1942:177, Pl. 12 (fig. 3) [Fishes of western South America; ref. 1246] Rio Morona, Loreto, Peru. Holotype: CAS 36448 [ex IU 15605]. Paratypes: CAS 36446 [ex IU 15816] (3). Type catalog: Ferraris 2007:126 [ref. 29155]. •Synonym of Corydoras trilineatus Cope 1872 -- (Ovchynnyk 1967:36 [ref. 37559], Nijssen & Isbrücker 1980:194 [ref. 6910], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:126 [ref. 29155]). •Synonym of Hoplisoma trilineatum (Cope 1872). Current status: Synonym of Hoplisoma trilineatum (Cope 1872). Callichthyidae: Corydoradinae. Habitat: freshwater.

eques, Corydoras Steindachner [F.] 1876:140 [92], Pl. 12 (fig. 3-3a) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Amazon River at Codajás, Amazonas, Brazil. Lectotype: NMW 61111 [ex NMW 46723]. Paralectotypes: NMW 46723-24 (1, 1), 64700 (3); MCZ 7748 (1), 8203 (2), 8204 (12), 8206 (1); ZMA 110473 [ex NMW 46723] (2). Type catalog: Nijssen et al. 1982:44-45 [ref. 19236], Ferraris 2007:116 [ref. 29155]. On p. 92 of separate. Lectotype selected by Nijssen & Isbrücker 1980:208 [ref. 6910]. •Valid as Corydoras eques Steindachner 1876 -- (Nijssen & Isbrücker 1980:208 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061] dated 1877, Ferraris 2007:116 [ref. 29155] dated 1877, Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:550 [ref. 34772], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Osteogaster eques (Steindachner 1876) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster eques (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Bolivia, Brazil, Ecuador and Peru). Habitat: freshwater.

esperanzae, Corydoras Castro [D. M.] 1987:34, Figs. 2- 3b; Pl. 4 (fig. 2) [Boletin Ecotrópica. No. 16; ref. 16225] Río Meta, Caño Orocue at Orocue, Colombia, 4°49'N, 71°20'W. Holotype: UBJTL MM275. Paratypes: UBJTL MM275.1 (4). Type catalog: Ferraris 2007:117 [ref. 29155]. •Synonym of Corydoras concolor Weitzman 1961 -- (Isbrücker 2001:223 [ref. 26805]). •Valid as Corydoras esperanzae Castro 1987 -- (Burgess & Finley 1996:168 [ref. 22901], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:117 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma esperanzae (Castro 1987) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma esperanzae (Castro 1987). Callichthyidae: Corydoradinae. Distribution: South America; Meta River basin, Colombia. Habitat: freshwater.

eurycephalus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:118, Fig. 9 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Rio Tocantins system, Corrego Vermelho into Rio das Almas, tributary of Rio Maranhão, about 15°S, 49°30'W, Goiás State, Brazil. Holotype: CAS 16010. Paratypes: CAS 31833 (5), ZMA 113593 (1). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras eurycephalus Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Tencatt & Bichuette 2017:21 [ref. 35168]). •Synonym of Aspidoras albater Nijssen & Isbrücker 1976 -- (Tencatt et al. 2022:23 [ref. 39729]). Current status: Synonym of Aspidoras albater Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Habitat: freshwater.

evelynae, Corydoras Rössel [F.] 1963:360, Fig. 4 [Senckenbergiana Biologica v. 44 (no. 5); ref. 19251] Upper Rio Salimões, Amazonas, Brazil. Holotype (unique): SMF 6107. Type catalog: Ferraris 2007:117 [ref. 29155]. Also appeared in Rössel 1966:9 [ref. 9060]. •Valid as Corydoras evelynae Rössel 1963 -- (Nijssen & Isbrücker 1980:201 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:117 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma evelynae (Rössel 1963) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma evelynae (Rössel 1963). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin, Brazil and Colombia. Habitat: freshwater.

eversi, Corydoras Tencatt [L. F. C.] & Britto [M. R.] 2016:[2], Figs. 1, 2a, 2c, 3-5 [Neotropical Ichthyology v. 14 (no. 1) e150062; ref. 34336] Goiás, Montes Claros de Goiás, unnamed stream tributary to the Rio Araguaia, Brazil, 15°53'10"S, 51°41'34"W. Holotype: MNRJ 43195. Paratypes: MZUSP, NUP, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras eversi Tencatt & Britto 2016. •Valid as Hoplisoma eversi (Tencatt & Britto 2016) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma eversi (Tencatt & Britto 2016). Callichthyidae: Corydoradinae. Distribution: South America: Montes Claros (Goiás, Brazil). Habitat: freshwater.

exaratus, Callichthys Müller [J.] & Troschel [F. H.] 1849:630 [Reisen in Britisch-Guiana; ref. 3072] Guyana. Syntypes: ?ZMB 3150 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

fabricioi, Callichthys Román-Valencia [C.], Lehmann A. [P.] & Muñoz [A.] 1999:54, Figs. 1-2 [Dahlia (Revista de la Asociación Colombiana de Ictiólogos, ACICTIOS). No. 3; ref. 24926] Zanjón Bagazal, tributary to Rio Cauca, Municipio Buenos Aires, Colombia, 3°03'59"N, 76°33'55"W, elevation 980 meters. Holotype: IUQ 295. Paratypes: ICNMHN 3842 (3); IUQ 152 (1), 305 (4), 306 (4), 307 (1); MCP 21174-75 (2, 3); UV 89018 (2), 91063 (5), 93001-04 (1, 1, 3, 3), 98002 (2), 98031 (3). Type catalog: Ferraris 2007:111 [ref. 29155], Mojica & Agudelo-Zamora 2018:29 [ref. 36127]. •Valid as Callichthys fabricioi Román-Valencia, Lehmann A. & Muñoz 1999 -- (Reis in Reis et al. 2003:293 [ref. 27061], Trajano et al. 2004:317 [ref. 27653], Ardila Rodríguez 2006:7 [ref. 29567], Ferraris 2007:111 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633]). Current status: Valid as Callichthys fabricioi Román-Valencia, Lehmann A. & Muñoz 1999. Callichthyidae: Callichthyinae. Distribution: Cauca River basin, Colombia. Habitat: freshwater.

filamentosus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:77, Figs. 6, 10d [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Tributary of Sisa Creek, flowing northwards, Río Corantijn basin, 3°42'N, 57°42'W, Nickerie District, Suriname, depth 0-1 meter. Holotype (unique): USNM 225536. Type catalog: Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:117 [ref. 29155]. •Valid as Corydoras filamentosus Nijssen & Isbrücker 1983 -- (Burgess 1989:366 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:117 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras filamentosus Nijssen & Isbrücker 1983. Callichthyidae: Corydoradinae. Distribution: South America: Corantijn River basin, Suriname. Habitat: freshwater.

flaveolus, Corydoras Ihering [R. von] 1911:386 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Tributaries to Rio Piracicaba above Salto, 23°10'S, 47°16'W, Estado de São Paulo, Brazil. Lectotype: MZUSP [ex DZSASP] 424. Type information: Britski 1969:207 [ref. 12401], Ferraris 2007:117 [ref. 29155]. One specimen known but description suggests more; known specimen is regarded as lectotype (see Nijssen & Isbrücker 1980:205 [ref. 6910]). •Valid as Corydoras flaveolus Ihering 1911 -- (Nijssen & Isbrücker 1980:205 [ref. 6910], Burgess 1989:366 [ref. 12860], Britto & Castro 2002:1007 [ref. 26509], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Knaack 2004:111 [ref. 28306], Ferraris 2007:117 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Tencatt et al. 2014:91 [ref. 33232], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:549 [ref. 34772]). •Valid as Hoplisoma flaveolum (Ihering 1911) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma flaveolum (Ihering 1911). Callichthyidae: Corydoradinae. Distribution: South America: upper Paraná River basin, Brazil. Habitat: freshwater.

fowleri, Corydoras Böhlke [J. E.] 1950:26 [The Fish Culturist v. 30 (no. 4); ref. 12427] Chancho Caño, near Pebas, 3°10'S, 71°46'W, Amazon River system, Loreto, Peru. Holotype (unique): CAS-SU 16115. Type catalog: Böhlke 1953:45 [ref. 12291], Ferraris 2007:117 [ref. 29155]. •Valid as Corydoras fowleri Böhlke 1950 -- (Nijssen & Isbrücker 1980:216 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:365 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:117 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Tencatt & Ohara 2016:432 [ref. 34627], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras fowleri Böhlke 1950. Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Bolivia, Colombia and Peru). Habitat: freshwater.

froehlichi, Corydoras Tencatt [L. F. C.], Britto [M. R.] & Pavanelli [C. S.] 2016:[11], Figs. 3b, 4b, 8, 9 [Neotropical Ichthyology v. 14 (no. 1) e150089; ref. 34388] Rio Pelotas, Esmeralda, Rio Grande do Sul, Brazil, 27°47’51"S, 51°10’17"W. Holotype: MCP 48433. Paratypes: MCP, MNRJ, MZUSP, NUP. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras froehlichi Tencatt, Britto & Pavanelli 2016 -- (Bertaco et al. 2016:416 [ref. 34561], Grant 2018:26 [ref. 36057]). •Valid as Hoplisoma froehlichi (Tencatt, Britto & Pavanelli 2016) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma froehlichi (Tencatt, Britto & Pavanelli 2016). Callichthyidae: Corydoradinae. Distribution: South America: upper rio Uruguai basin (Rio Grande do Sul, Brazil). Habitat: freshwater.

fulleri, Corydoras Tencatt [L. F. C.], Santos [S. A. dos], Evers [H.-G.] & Britto [M. R.] 2021:2 [615], Figs. 1-4 [Journal of Fish Biology v. 99 (no. 2); ref. 38289] Stream tributary of the upper río Manuripe (or Manuripi), locally known as Alegría, a tributary of the río Orthon, rio Madeira basin, Las Piedras, Tambopata, Madre de Dios, Peru, 12°06'02"S, 69°03'28"W. Holotype: MUSM 69317. Paratypes: MNRJ, MZUSP, NUP, ZUFMS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras fulleri Tencatt, Santos, Evers & Britto 2021 -- (Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras fulleri Tencatt, Santos, Evers & Britto 2021. Callichthyidae: Corydoradinae. Distribution: South America: Orthon and Madre de Dios River drainages, Madeira River basin, Madre de Dios (Peru and Bolivia). Habitat: freshwater.

funnelli, Corydoras Fraser-Brunner [A.] 1947:241, Fig. 1 [Proceedings of the Zoological Society of London v. 117 (pt 1); ref. 13085] Amazon ? (imported aquarium specimen). Holotype: USNM 102222. Paratype: BMNH 1946.10.3.3 (1). Type catalog: Ferraris & Vari 1992:13 [ref. 19771], Ferraris 2007:119 [ref. 29155]. •Synonym of Corydoras leopardus Myers 1933 -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155]). •Synonym of Brochis leopardus (Myers 1933). Current status: Synonym of Brochis leopardus (Myers 1933). Callichthyidae: Corydoradinae. Habitat: freshwater.

fuscoguttatus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:118, Fig. 10 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Rio Paraná system, Córrego Corguinho, estrada da Três Lagoas, 20°46'S, 51°43'W, Mato Grosso State, Brazil. Holotype: MZUSP 8573. Paratypes: MZUSP 11737-55 (19), ZMA 113594 (5). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras fuscoguttatus Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:582 [ref. 33891], Ottoni et al. 2016:132 [ref. 34756], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:63 [ref. 39729], Freitas et al. 2023:904 [ref. 41013], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras fuscoguttatus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: upper Paraná and São Francisco River basins, Brazil. Habitat: freshwater.

gabrieli, Aspidoras Wosiacki [W. B.], Graças Pereira [T. d.] & Reis [R. E.] 2014:39, Figs. 1-4 [Copeia 2014 (no. 2); ref. 33356] Pará, Parauapebas, Serra dos Carajás, unnamed tributary to the left bank of Rio Parauapebas, tributary to the right bank of Rio Itacaiu´nas, lower Rio Tocantins basin, 6°05'15.6"S, 50°07'56.9'W, Brazil, atitude approx. 660 meters. Holotype: MPEG 27080. Paratypes: INPA, MNRJ, MPEG, MZUSP. •Valid as Aspidoras gabrieli Wosiacki, Graças Pereira & Reis 2014 -- (Leão et al. 2015:585 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:74 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras gabrieli Wosiacki, Graças Pereira & Reis 2014. Callichthyidae: Corydoradinae. Distribution: South America: lower Rio Tocantins basin, Pará State, Brazil. Habitat: freshwater.

garbei, Corydoras Ihering [R. von] 1911:382 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Rio São Francisco, Bahia, Brazil. Lectotype: MZUSP [ex DZSASP] 711. Paralectotypes: MNRJ 1101A (1), 1101B (9); MZUSP [ex DZSASP] 711 (1), MZUSP [ex DZSASP] 5301-5325 (23); ZMA 110938-39 (1, 1). Type catalog: Miranda Ribeiro 1959:11 [ref. 10392] as cotypes, Ferraris 2007:117 [ref. 29155]. Lectotype selected by Britski 1969:207 [ref. 12401] for garbei Ihering, not garbei of Miranda Ribeiro 1937; lectotype selected by Miranda Ribeiro 1953:394 [ref. 12732] for Corydoras garbei. Type information: Nijssen et al. 1982:45 [ref. 19236] but with incorrect lectotype designation (see garbei Miranda Ribeiro). •Valid as Corydoras garbei Ihering 1911 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:366 [ref. 12860], Britto & Castro 2002:1012 [ref. 26509], Isbrücker 2001:225 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Axenrot & Kullander 2003:264 [ref. 27393], Ferraris 2007:117 [ref. 29155], Tencatt et al. 2013:262 [ref. 32752], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:132 [ref. 34756], Silva et al. 2020:10 [ref. 37809], Vieira-Guimarães et al. 2024:43 [ref. 41258]). •Valid as Brochis garbei (Ihering 1911) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis garbei (Ihering 1911). Callichthyidae: Corydoradinae. Distribution: South America: São Francisco River basin (Brazil). Habitat: freshwater.

garbei, Corydoras Miranda Ribeiro [A. de] 1937:54 [O Campo Rio de Janeiro No. 1; ref. 5025] Rio São Francisco, Estado da Bahia, Brazil. Lectotype: MNRJ 1101A. Paralectotypes: MNRJ 1101 (9). Type catalog: Ferraris 2007:117 [ref. 29155]. Appeared as "Corydoras garbei sp. nov.", but the description was copied from Ihering 1911 (and not from Miranda Ribeiro 1911). Regarded by Britski 1969:207 [ref. 12401] as a homonym and synonym of Corydoras garbei Ihering 1911, but the authorship "Mir. Rib." at the beginning of the account (p. 54) we regard as in error. The lectotype designation by P. Miranda-Riebiro 1953:395 was for garbei Miranda Ribeiro, but the 10 specimens [MNRJ 1101] listed by Miranda Ribeiro in 1953 apparently were part of Ihering's series. Britski 1969:207 [ref. 12401] designated DZSASP 711 as lectotype for garbei Ihering 1911. Since Ihering was responsible for the description of both "species," he would be the author in 1937 as well, as Ihering in Miranda Ribeiro. We regard the account in 1937 as unavailable and do not accept the lectotype designation of Miranda Ribeiro in 1953 although it could be argued that he also just errored in the authorship. •In the synonymy of Corydoras garbei Ihering 1911 -- (Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230]). •In the synonymy of Brochis garbei (Ihering 1911). 1°Homonym. Current status: Synonym of Brochis garbei (Ihering 1911). Callichthyidae: Corydoradinae.

geoffroy, Corydoras Lacepède [B. G. E.] 1803:147, 148 [Histoire naturelle des poissons (Lacepède) v. 5; ref. 4930] Marchall Creek, east of road Paranam-Afobaka, 1.5 kilometers north of Marchall Village, District Brokopondo, Suriname. Neotype: ZMA 106017. Type catalog: Ferraris 2007:117 [ref. 29155]. Type lost (see Nijssen & Isbrücker 1980:194 [ref. 6910]). Neotype designated by Isbrücker 1999:40 [ref. 26260]; the neotype is the holotype of Corydoras octocirrusNijssen 1971. •Synonym of Corydoras punctatus (Bloch 1794) -- (Nijssen & Isbrücker 1980:193-194 [ref. 6910], Burgess 1989:365 [ref. 12860]). •Valid as Corydoras geoffroy Lacepède 1803 -- (Isbrücker 1999:38 [ref. 24040], Le Bail et al. 2000:196 [ref. 24549], Isbrücker 2000:17 [ref. 26715], Isbrücker 2001:226 [ref. 26805], Britto & Castro 2002:1006 [ref. 26509], Isbrücker 2002:33 [ref. 34642], Isbrücker 2002:69 [ref. 26658], Isbrücker 2002:106 [ref. 26659], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], Tencatt & Ohara 2016:432 [ref. 34627], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras geoffroy Lacepède 1803. Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers of French Guiana and Suriname. Habitat: freshwater.

gersoni, Corydoras Emmens [C. W.] & Axelrod [H. R.] 1968:64, 2 Figs. [Catfish; ref. 19659] Not available, no description or definition -- see Nijssen and Isbrücker 1979:133 [ref. 19254]. Nomen Nudum. Current status: Synonym of Hoplisoma polystictum (Regan 1912). Callichthyidae: Corydoradinae.

geryi, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:78, Figs. 7, 10e [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Flooded plain a few kilometers from Trinidad, 14°46'S, 65°50'W, Río Mamoré basin, Beni Province, Bolivia. Holotype: MNHN 1983-0529. Paratypes: MHNG 214988-89 (2), MNHN 1983-0530 (2), ?MNHN [ex ORSTOM-Trinidad, Bolivia] uncat. (1), ZMA 109102 (4). Type catalog: Isbrücker 1999:59 [ref. 38367], Ferraris 2007:117 [ref. 29155]. •Valid as Corydoras geryi Nijssen & Isbrücker 1983 -- (Burgess 1989:366 [ref. 12860], Isbrücker 1999:59 [ref. 38367], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Brochis geryi (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis geryi (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: Mamoré River basin (Bolivia). Habitat: freshwater.

gladysae, Corydoras Calviño [P. A.] & Alonso [F.] 2010:200, Fig. 1 [Revista del Museo Argentino de Ciencias Naturales, n.s. v. 11 (no. 2) [for 2009]; ref. 30829] Calchaquí River, 25°02'59"S, 66°06'25" W, Payogasta, Cachi Department, Salta Province, Argentina, elevation 2430 meters. Holotype: MACN 9232. Paratypes: MCNI 712 (4), 913 (4). •Valid as Corydoras gladysae Calviño & Alonso 2010 -- (Koerber 2011:5 [ref. 31122], Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:40 [ref. 35117], Ohara et al. 2016:548 [ref. 34772]). •Valid as Hoplisoma gladysae (Calviño & Alonso 2010) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma gladysae (Calviño & Alonso 2010). Callichthyidae: Corydoradinae. Distribution: South America: Calchaquí River drainage, Salta Province, Argentina. Habitat: freshwater.

gomezi, Corydoras Castro [D. M.] 1986:34, Figs. 1-2 [Boletin Ecotrópica. No. 15; ref. 16226] Lakes of the Isla de Mocagua, Amazon River, near Leticia, Comisaría del Amazonas, 3°54'S, 70°14'W, Colombia. Holotype: UBJTL MM536. Type catalog: Ferraris 2007:117 [ref. 29155]. •Valid as Corydoras gomezi Castro 1986 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Brochis gomezi (Castro 1986) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis gomezi (Castro 1986). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin near border of Brazil and Colombia. Habitat: freshwater.

gossei, Corydoras Nijssen [H.] 1972:424, Fig. 6 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Near Guajará Mirim, 10°50'S, 65°21'W, Rio Mamoré system, Rondônia State, Brazil. Holotype: IRSNB 487. Paratypes: IRSNB 488 (orig. 13, now 7), MZUSP [ex IRSNB 488] (6), USNM 205867 (2), ZMA 110396 (12). Type catalog: Nijssen et al. 1982:45 [ref. 19236], Walschaerts 1987:18 [ref. 20755], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:118 [ref. 29155]. •Valid as Corydoras gossei Nijssen 1972 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:550 [ref. 34772]). •Valid as Hoplisoma gossei (Nijssen 1972) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma gossei (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: Mamoré River drainage, western Aamzon basin, Brazil and Bolivia. Habitat: freshwater.

gracilis, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:91, Figs. [Tropical Fish Hobbyist v. 25 (no. 1); ref. 7380] Rio Jauna (= River Juma) at Trans-Amazonica highway, about 6°09'S, 59°55'W, tributary of Rio Aripuaña, Amazonas, Brazil (corrected locality). Holotype: ZMA 114687. Paratypes: BMNH 1976.4.27.143 (1); USNM 216074 (1); ZMA 114688-89 (1, 1); ZMH H5688 (1). Type catalog: Wilkens 1977:159 [ref. 22013], Nijssen et al. 1982:45 [ref. 19236], Ferraris 2007:118 [ref. 29155]. Type locality corrected in Nijssen & Isbrücker 1980:214 [ref. 6910], Ferraris & Vari 1992:14 [ref. 19771]. •Valid as Corydoras gracilis Nijssen & Isbrücker 1976 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:226 [ref. 26805] with different locality, Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], Britto et al. 2009:687 [ref. 30609], Tencatt & Ohara 2016:[12] [ref. 34353], Ohara et al. 2016:548 [ref. 34772], Bono et al. 2019:20 [ref. 36480], Tencatt et al. 2019:[14] [ref. 36697]). •Valid as Gastrodermus gracilis -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus gracilis (Nijssen & Isbrücker 1976). Callichthyidae: Corydoradinae. Distribution: South America: middle and lower Amazon River basin, Brazil. Habitat: freshwater.

grafi, Corydoras Holly [M.] 1940:108 [Anzeiger der Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse v. 77 (no. 15); ref. 13059] Aquarium specimen (said to be from very small water-courses of the Amazon). Holotype (unique): NMW 84287 (ex Münchner Tierpark 92/139). Type catalog: Ferraris 2007:113 [ref. 29155]; Grant 2021:29 [ref. 38454], Bogutskaya et al. 2022:50 [ref. 39277]. •Synonym of Corydoras ambiacus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155], Grant 2021:30 [ref. 38454]). Current status: Synonym of Brochis ambiacus (Cope 1872). Callichthyidae: Corydoradinae. Habitat: freshwater.

granti, Corydoras Tencatt [L. F. C.], Lima [F. C. T.] & Britto [M. R.] 2019:[9], Figs. 3b, 4d, 5b, 9-11, 13, 15a [Journal of Fish Biology v. 95 (no. 2); ref. 36697] Igarapé Ya-Mirim (= Iazinho), a tributary to the Rio Cauaburi, itself a tributary to the Rio Negro, São Gabriel da Cachoeira, Amazonas, Brazil, 0° 16'19"N, 66°38'21"W. Holotype: MNRJ 51193. Paratypes: ANSP, FMNH, ICNMHN, INPA, LBP, MCP, MCZ, MNRJ, MZUSP, NRM, NUP, ZUEC, ZUFMS. Plus additional non-type material. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras granti Tencatt, Lima & Britto 2019 -- (Bentley et al. 2021:189 [ref. 38185]). •Valid as Hoplisoma granti (Tencatt, Lima & Britto 2019) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma granti (Tencatt, Lima & Britto 2019). Callichthyidae: Corydoradinae. Distribution: South America: widely distributed in the central and western Amazon basin (Brazil, Peru, Colombia and Ecuador). Habitat: freshwater.

griseus, Corydoras Holly [M.] 1940:110 [Anzeiger der Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse v. 77 (no. 15); ref. 13059] Aquarium specimen (said to be from very small water-courses of the Amazon). [Essequibo, Potaro River, Guyana]. Holotype: Münchner Tierpark A.G. 72/1938 (lost in WWII). Type catalog: Ferraris 2007:118 [ref. 29155], Bogutskaya et al. 2022:74 [ref. 39277]. Locality corrected by Nijssen & Isbrücker 1980. Comments on identity of this taxon see Grant 2021:18-20 [ref. 38629]. •Valid as Corydoras griseus Holly 1940 -- (Nijssen & Isbrücker 1980:210 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Lima & Britto 2020:528 [ref. 37324], Grant 2021:20 [ref. 38629], Taphorn et al. 2022:45 [ref. 41297]). •Valid as Hoplisoma griseum (Holly 1940) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma griseum (Holly 1940). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil and Guyana). Habitat: freshwater.

gryphus, Corydoras Tencatt [L. F. C.], Britto [M. R.] & Pavanelli [C. S.] 2014:72, Figs. 1-3 [Neotropical Ichthyology v. 12 (no. 1); ref. 33230] Paraná, Foz do Iguaçu, rio Paraná (near Ponte da Amizade), approximately 25°31’S, 54°38’W, Brazil. Holotype: MNRJ 40770. Paratypes: MCP 47852 (6), ZUEC-PIS 7656 (9). Type catalog: Oliveira et al. 2022:11 [ref. 39255]. Tencatt & Evers 2016:[11] [ref. 34387] mention 3 paratypes as NUP 14676. •Valid as Corydoras gryphus Tencatt, Britto & Pavanelli 2014 -- (Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma gryphus (Tencatt, Britto & Pavanelli 2014) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma gryphus (Tencatt, Britto & Pavanelli 2014). Callichthyidae: Corydoradinae. Distribution: South America: Rio Paraná drainage, Lower Parana (Brazil). Habitat: freshwater.

guapore, Corydoras Knaack [J.] 1961:135, Figs. 1-2 [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin (N.F.) v. 1 (nos 1-3); ref. 6008] Main stream of upper Rio Guaporé, Rondônia, Brazil. Holotype: ZMB 21406. Paratypes: two alive mentioned in original description but apparently not preserved. Type catalog: Ferraris 2007:118 [ref. 29155]. Type information: Knaack 2003:16 [ref. 27879]. •Valid as Corydoras guapore Knaack 1961 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Knaack 2007:43 [ref. 29221], Ferraris 2007:118 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:288 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus guapore (Knaack 1961). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

guianensis, Corydoras Nijssen [H.] 1970:21, Fig. 9 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at right of Nickerie River, 12 kilometers west-south-west of Stondansie Fall, Nickerie District, Suriname. Holotype: ZMA 105933. Paratypes: CAS 14504 [ex ZMA 105.837] (2); BMNH 1970.6.16.4-5 (2); IRSNB 468 (31); NMW 61107 [=75465] (7); RMNH 18499 (1), 25822 (2); USNM 204218 (2); ZMA 105836 (4), 105837 (130, now 90), 105887-88 (1, 4), 106101 (1). Type catalog: Nijssen et al. 1982:45 [ref. 19236] with some discrepancies in number of specimens from Nijssen & Isbrücker 1980:212 [ref. 6910], Walschaerts 1987:18 [ref. 20755], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:118 [ref. 29155]. •Valid as Corydoras guianensis Nijssen 1970 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:366 [ref. 12860], Le Bail et al. 2000:198 [ref. 24549], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155]). •Valid as Hoplisoma guianense (Nijssen 1970) -- (Dias et al. 2024:26 [ref. 41219] as guianensis). Current status: Valid as Hoplisoma guianense (Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers of French Guiana and Suriname. Habitat: freshwater.

habrosus, Corydoras Weitzman [S. H.] 1960:141, Figs. 1-2 [Stanford Ichthyological Bulletin v. 7 (no. 4); ref. 9614] Río Salinas, tributary of Río Pao Viejo, El Baúl, 8°59'N, 68°16'W, Cojedes, Venezuela. Holotype: CAS-SU 52351. Paratypes: CAS-SU 52350 (now 3), ZMA 111422 (1). Type catalog: Nijssen et al. 1982:45 [ref. 19236], Ferraris 2007:118 [ref. 29155]. •Valid as Corydoras habrosus Weitzman 1960 -- (Nijssen & Isbrücker 1980:211 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma habrosum (Weitzman 1960) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma habrosum (Weitzman 1960). Callichthyidae: Corydoradinae. Distribution: South America: upper Orinoco River basin, Colombia and Venezuela. Habitat: freshwater.

haraldschultzi, Corydoras Knaack [J.] 1962:129, Fig. 1; Pl. 11 (figs. 1a-c) [Senckenbergiana Biologica v. 43 (no. 2); ref. 6038] Rio Guaporé, Brazil. Holotype: SMF 5475. Paratypes: (4 living specimens originally) MCP 27958 (1); ZMA 123549 (1). Type catalog: Ferraris 2007:118 [ref. 29155]. See Isbrücker 2001:227 [ref. 26805] for locality problems and need for further study. Type information: Knaack 2003:16 [ref. 27879]. •Valid as Corydoras haraldschultzi Knaack 1962 -- (Nijssen & Isbrücker 1980:199 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Ohara et al. 2016:550 [ref. 34772]). •Valid as Brochis haraldschultzi (Knaack 1962) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis haraldschultzi (Knaack 1962). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

hastatus, Corydoras Eigenmann [C. H.] & Eigenmann [R. S.] 1888:166 [Proceedings of the California Academy of Sciences (Series 2) v. 1 (pt 2); ref. 1249] Villa Bella (= Parintins, 2°38'S, 56°45'W), Amazonas, Brazil. Lectotype: MCZ 7747. Paralectotypes: MCZ 95271 [ex 7747B] (1). Type catalog: Ferraris 2007:118 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:213 [ref. 6910]. •Valid as Corydoras hastatus Eigenmann & Eigenmann 1888 -- (Nijssen & Isbrücker 1980:213 [ref. 6910], Burgess 1989:366 [ref. 12860], Gómez & Chebez 1996:62 [ref. 23791], Britski et al. 1999:126 [ref. 24147], Lasso et al. 2001:98 [ref. 25928], Isbrücker 2001:227 [ref. 26805], Britto et al. 2002:733 [ref. 26546], López et al. 2003:42 [ref. 27366], Reis in Reis et al. 2003:298 [ref. 27061], Menni 2004:82 [ref. 28131], Ferraris 2007:118 [ref. 29155], Calviño & Alonso 2010:199 [ref. 30829], Tencatt et al. 2014:78 [ref. 33230], Litz & Koerber 2014:23 [ref. 33622], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:40 [ref. 35117], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], Bertaco et al. 2016:416 [ref. 34561], Ohara et al. 2016:550 [ref. 34772], Reis et al. 2016:14 [ref. 34496], Nión et al. 2016:31 [ref. 35565], Koerber et al. 2017:58 [ref. 35267], Grant 2018:26 [ref. 36057], Grant 2019:7 [ref. 37238], Loureiro et al. 2023:94 [ref. 40506]). •Valid as Gastrodermus hastatus (Eigenmann & Eigenmann 1888) -- (Dias et al. 2024:24 [ref. 41219], Koerber 2024:4 [ref. 41228]). Current status: Valid as Gastrodermus hastatus (Eigenmann & Eigenmann 1888). Callichthyidae: Corydoradinae. Distribution: South America: Amazon and Paraguay River basins (Argentina, Bolivia, Brazil, Paraguay and Uruguay). Habitat: freshwater.

hemiphractus, Callichthys Hensel [R.] 1868:374 [Archiv für Naturgeschichte v. 34 (pt 1); ref. 14075] Costa da Serra, Brazil. Holotype: ZMB 7434 (1 of 2). Type catalog: Ferraris 2007:111 [ref. 29155]. •Listed under Callichthys aff. callichthys (Linnaeus 1758) -- (Malabarba 1989:146 [ref. 14217]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

hephaestus, Corydoras Ohara [W. M.], Tencatt [L. F. C.] & Britto [M. R.] 2016:540, Figs. 1-6 [Zootaxa 4170 (no. 3); ref. 34772] Tributary of Igarapé Piracolina, near road BR-364, upper Rio Machado, Rio Madeira basin, Vilhena, Rondônia State, Brazil, 12°48'56"S, 60°06'37"W, elevation 585 meters. Holotype: MZUSP 119087. Paratypes: INPA, MCP, MNRJ, MZUSP, NUP. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras hephaestus Ohara, Tencatt & Britto 2016 -- (Tencatt et al. 2023:21 [ref. 40180]). •Valid as Osteogaster hephaestus (Ohara, Tencatt & Britto 2016) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster hephaestus (Ohara, Tencatt & Britto 2016). Callichthyidae: Corydoradinae. Distribution: South America: upper Machado River drainage, Madeira River basin, Brazil. Habitat: freshwater.

heteromorphus, Corydoras Nijssen [H.] 1970:22, Fig. 10 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at right bank of Coppename River, Saramacca, 3°52'30"N, 56°53'W, Suriname. Holotype: ZMA 105880. Paratypes: CAS 14500 [ex ZMA 105881] (2), BMNH 1970.6.16.6-7 (2), FMNH 70488 (2), ICNMHN 1109 (3); MNRJ (1), MZUSP (2), NMW 61108 (6), RMNH 25820 (2), SMF 12098 (2), USNM 204224 (2), ZMA 105835 (3), 105881 (101 or 82), 105883-86 (55, 14, 11, 1). Type catalog: Nijssen et al. 1982:45-46 [ref. 19236], Ibarra & Stewart 1987:27 [ref. 12367], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:118 [ref. 29155], Mojica & Agudelo-Zamora 2018:30 [ref. 36127]. Type catalog of Nijssen et al. 1982:45-46 [ref. 19236] with some differences from Nijssen & Isbrücker 1980:212 [ref. 6910]. •Valid as Corydoras heteromorphus Nijssen 1970 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:366 [ref. 12860], Grant 1998:45 [ref. 23454], Le Bail et al. 2000:200 [ref. 24549], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:118 [ref. 29155]). •Valid as Brochis heteromorphus (Nijssen 1970) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis heteromorphus (Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: Coppename and Nickerie River basins, Suriname. Habitat: freshwater.

hypnos, Corydoras Tencatt [L. F. C.], Ohara [W. M.], Sousa [L. M.] & Britto [M. R.] 2022:15, Figs. 7-10 [Neotropical Ichthyology v. 20 (no. 3): e220070; ref. 39741] Rio Jamanxim, a tributary to the rio Tapajós, Novo Progresso Municipality, Pará State, Brazil, 08°23'00"S, 55°19'08"W. Holotype: MNRJ 53288. Paratypes: CITL, INPA, MZUSP, NUP. •Valid as Hoplisoma hypnos (Tencatt, Ohara, Sousa & Britto 2022). Current status: Valid as Hoplisoma hypnos (Tencatt, Ohara, Sousa & Britto 2022). Callichthyidae: Corydoradinae. Distribution: South America: Jamanxim River drainage, Tapajós River basin, Brazil. Habitat: freshwater.

iiap, Corydoras Tencatt [L. F. C.], Ruiz-Tafur [M.] & Chuctaya [J.] 2024:4, Figs. 1-11 [Neotropical Ichthyology v. 22 (no. 2): e240016; ref. 41298] Quebrada Paujil, Iquitos-Nauta road km 26.4, lower Río Nanay drainage, upper Río Amazonas basin, San Juan Bautista District, Maynas Province, Loreto District, Peru, 03°57'49"S, 73°25'02"W. Holotype: CIIAP 3906. Paratypes: CIIAP, MNRJ. •Valid as Corydoras iiap Tencatt, Ruiz-Tafur & Chuctaya 2024. Current status: Valid as Corydoras iiap Tencatt, Ruiz-Tafur & Chuctaya 2024. Callichthyidae: Corydoradinae. Distribution: South America: Nanay and Itaya River drainages, upper Amazon basin, Loreto District, Peru. Habitat: freshwater.

imitator, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:79, Figs. 8, 10f [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Upper Rio Negro, eastern Amazonas, Brazil (probably forest brooks crossing "new army road", northern São Gabriel da Cachoeira). Holotype: MZUSP 27894 [ex USNM 235310 in part]. Paratypes: ZMA 119103 (1). Type catalog: Ferraris 2007:118 [ref. 29155]. •Status uncertain, may be a synonym of Corydoras adolfoi Burgess 1982 -- (Burgess 1989:366 [ref. 12860]). •Valid as Corydoras imitator Nijssen & Isbrücker 1983 -- (Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:118 [ref. 29155]). •Valid as Brochis imitator (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis imitator (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

incolicana, Corydoras Burgess [W. E.] 1993:157, Figs. [Tropical Fish Hobbyist v. 41 (no. 12) (issue no. 450); ref. 20758] Rio Içana, Upper Rio Negro drainage, Brazil. Holotype: MZUSP 45717. Paratypes: USNM 326188 (7). Type catalog: Ferraris 2007:118 [ref. 29155]. •Valid as Corydoras incolicana Burgess 1993 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:118 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis incolicana (Burgess 1993) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis incolicana (Burgess 1993). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

isbrueckeri, Corydoras Knaack [J.] 2004:88, Figs. 30-36 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Tributary of río Paragua (a nameless small stream), río Itenez system, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia, 13°34.384's, 62°03.067'W. Holotype: MTD F 28474. Paratypes: CAS 219275 (2); CIRA-UTB 1084 (2); CJK uncat (135), uncat (135); MCP uncat. (1); MTDF 28475 (1), 28476 (1), 28477 (1); ZMA 123.1000.740 (1), 123.1000.741 (1); ZMB 33536 (1), 33537 (1). Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras isbrueckeri Knaack 2004 -- (Ferraris 2007:119 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Brochis isbrueckeri (Knaack 2004) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis isbrueckeri (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

julii, Corydoras Steindachner [F.] 1906:480 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftlichen Classe v. 43; ref. 15716] Creek into River Parnaíba near Alto Parnaíba (= Victoria), 9°08'S, 45°56'W, Brazil. Lectotype: NMW 61105 [ex NMW 46734]. Paralectotypes: (several) NMW 46734-36 (5, 2, 2), 46741-43 (3, 22, 40); MNHN 1907-0176 (2); MZUT 1676 (1); RMNH 7975 (3); ZMA 110474 [ex NMW 46375] (6), 110475 [ex NMW 46736] (3); ZSM 17995-98 (4). Type catalog: Tortonese 1940:136 [ref. 21559], Bertin & Estève 1950:65 [ref. 19575], Nijssen et al. 1982:46 [ref. 19236], Ferraris 2007:119 [ref. 29155], Neumann 2011:243 [ref. 31652]. Lectotype selected by Nijssen & Isbrücker 1980:195 [ref. 6910]. •Valid as Corydoras julii Steindachner 1906 -- (Ovchynnyk 1967:36 [ref. 37559], Nijssen & Isbrücker 1980:195 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Espíndola et al. 2014:28 [ref. 33269], Ramos et al. 2014:4 [ref. 35321], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], Lima & Sazima 2017:30 [ref. 35111], Koerber et al. 2022:48 [ref. 39235], Vieira et al. 2023:20 [ref. 40759], Limeira-Filho et al. 2024:7 [ref. 41573]). •Valid as Hoplisoma julii (Steindachner 1906) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma julii (Steindachner 1906). Callichthyidae: Corydoradinae. Distribution: South America: lower Amazon River basin and coastal rivers (northeastern Brazil). IUCN (2022): Least Concern, as Corydoras julii. Habitat: freshwater.

juquiaae, Corydoras Ihering [R. von] 1907:36 [37] [Notas preliminares; editadas pela redaccão da Revista do Museu Paulista v. 1 (fasc. 1); ref. 2294] Rio Juquiá, Poço Grande, São Paulo State, Brazil. Lectotype: CAS 16016 [ex IU 10796]. Paralectotypes: BMNH 1905.6.9.9 (1); MZUSP [ex DZSASP] 1984 (1), MZUSP [ex DZSASP] 5326-30 (5); NMW 18993-94 (1, 1). Type catalog: Ferraris 2007:121 [ref. 29155]. Portuguese on p. 37. Syntypes: Lectotype established first by Ellis 1913:403 [ref. 1270] with catalog number as IU 10996 [error for 10796]. Britski 1969:207 [ref. 12401] viewed Ellis' designation as an incorrect interpretation of a holotype, and he designated DZSASP 1984 as lectotype; spelled species as juquiae. •Synonym of Corydoras nattereri Steindachner 1876 -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:121 [ref. 29155]). •Synonym of Hoplisoma nattereri (Steindachner 1876). Current status: Synonym of Hoplisoma nattereri (Steindachner 1876). Callichthyidae: Corydoradinae. Habitat: freshwater.

kanei, Corydoras Grant [S.] 1997:41, Photos 1-2 [The Aquarist and Pondkeeper v. 62 (no. 10) (for 1998); ref. 23454] Aquarium specimens said to be from near the town of Boa Vista, Roraima State, Brazil [possibly from the Rio Branco]. Holotype: MZUSP 52489 [currently BMNH 1997.10.23.1]. Paratypes: BMNH 1997.10.23.2-4 (3). Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras kanei Grant 1997 (often seen as 1998) -- (Isbrücker 2001:227 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061] dated 1997, Ferraris 2007:119 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma kanei (Grant 1997) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma kanei (Grant 1997). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.

kiriri, Aspidoras Oliveira [L. M. A.], Zanata [A. M.], Tencatt [L. F. C.] & Britto [M. R.] 2017:[2], Figs. 1-5 [Neotropical Ichthyology v. 15 (no. 1); ref. 35227] Riacho Cai-Camarão, rio da Dona basin, Varzedo, Bahia, Brazil, 12°57'35.9"S, 39°26'54.9"W, elevation 303 meters. Holotype: MNRJ 47400. Paratypes: MNRJ, MZUSP, NUP, UEFS, UFBA, ZUFMS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Aspidoras kiriri Oliveira, Zanata, Tencatt & Britto 2017 -- (Silva et al. 2020:9 [ref. 37809], Tencatt et al. 2022:75 [ref. 39729], Dias et al. 2024:24 [ref. 41219], Vieira-Guimarães et al. 2024:43 [ref. 41258]). Current status: Valid as Aspidoras kiriri Oliveira, Zanata, Tencatt & Britto 2017. Callichthyidae: Corydoradinae. Distribution: South America: Rio da Dona basin, Bahia State (Brazil). Habitat: freshwater.

knaacki, Corydoras Tencatt [L. F. C.] & Evers [H.-G.] 2016:[2], Figs. 1-4, 7 [Neotropical Ichthyology v. 14 (no. 1) e150019; ref. 34387] Swamps in the vicinity of the town of Santa Rita, draining into the río Inambari, río Madre de Dios basin, Madre de Dios, Peru, 12°54’46.4"S, 70°10’37.4"W. Holotype: MUSM 52730. Paratypes: INPA, MNRJ, MZUSP, NUP, ROM, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Corydoras knaacki Tencatt & Evers 2016. •Valid as Hoplisoma knaacki (Tencatt & Evers 2016) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma knaacki (Tencatt & Evers 2016). Callichthyidae: Corydoradinae. Distribution: South America: Rio Madre de Dios basin (Peru). Habitat: freshwater.

kneri, Callichthys Gill [T. N.] 1858:394 [34] [Annals of the Lyceum of Natural History of New York v. 6 (nos 10-13, art. 38); ref. 1750] Trinidad Island, West Indies. No types known. Type catalog: Ferraris 2007:111 [ref. 29155]. On p. 34 of separate. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

kronei, Corydoras Miranda Ribeiro [A. de] 1907:189, Fig. [Boletim Sociedade Nacional Agricultura, Rio de Janeiro [Lavoura] v. 11 (no. 5); ref. 17767] Iguapé, Iporangue, Estado de São Paulo, Brazil. Lectotype: MNRJ 918A. Paralectotypes: MNRJ 918B (2). Type catalog: Miranda Ribeiro 1955:395 [ref. 12732], Miranda Ribeiro 1959:11 [ref. 10392], Ferraris 2007:129 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:202 [ref. 6910]. •Valid as Corydoras kronei Miranda Ribeiro 1907 -- (Isbrücker 2001:228 [ref. 26805]). •Synonym of Corydoras barbatus (Quoy & Gaimard 1824) -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Reis in Reis et al. 2003:295 [ref. 27061], Reis in Reis et al. 2003:295 [ref. 27061]). •Synonym of Scleromystax barbatus (Quoy & Gaimard 1824) -- (Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Scleromystax barbatus (Quoy & Gaimard 1824). Callichthyidae: Corydoradinae. Habitat: freshwater.

lacerdai, Corydoras Hieronimus [H.] 1995:110, Figs. 5-7 [Zeitschrift für Fischkunde v. 3 (no. 1); ref. 22672] Rio Ribeira da Terra Firme, between Canavieiras and Ilheus, southeastern Bahia, Brazil. Holotype: MZUSP 47682. Paratypes: MZUSP 47683-84 (1, 1), ZMA 121255 (1), ZFMK 18551 (1), 18553 (1). Type catalog: Ferraris 2007:119 [ref. 29155], Herder et al. 2010:120 [ref. 31087] •Valid as Corydoras lacerdai Hieronimus 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Silva et al. 2020:10 [ref. 37809], Vieira-Guimarães et al. 2024:43 [ref. 41258]). •Valid as Scleromystax lacerdai (Hieronimus 1995) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax lacerdai (Hieronimus 1995). Callichthyidae: Corydoradinae. Distribution: South America: Ribeira da Terra Firme River drainage, Bahia State (Brazil). Habitat: freshwater.

lacrimostigmata, Corydoras Tencatt [L. F. C.], Britto [M. R.] & Pavanelli [C. S.] 2014:91, Figs. 1-2a [Neotropical Ichthyology v. 12 (no. 1); ref. 33232] Paraná, Cândido de Abreu, rio Maria Flora, tributary to rio Ubazinho, rio Ivaí basin, 24°36’32"S, 51°15’32"W, Brazil. Holotype: MNRJ 40725. Paratypes: MCP, MNRJ, NUP, ZUEC-Pis. Type catalog: Oliveira et al. 2022:12 [ref. 39255]. The specific epithet is regarded as an indeclinable noun. •Valid as Corydoras lacrimostigmata Tencatt, Britto & Pavanelli 2014 -- (Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Reis et al. 2020:464 [ref. 38364]). •Valid as Hoplisoma lacrimostigmata (Tencatt, Britto & Pavanelli 2014) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma lacrimostigmata (Tencatt, Britto & Pavanelli 2014). Callichthyidae: Corydoradinae. Distribution: South America: Rio Ivaí basin (southern Brazil). Habitat: freshwater.

laeviceps, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:309 [Histoire naturelle des poissons v. 15; ref. 1008] La Mana River, French Guiana. Syntypes: MNHN 0000-1947 (1) La Mana R., 0000-4259 (1) Rio de Janeiro, 0000-4261 (1) La Mana R. Type catalog: Bertin & Estève 1950:64 [ref. 19575], Ferraris 2007:111 [ref. 29155] Syntype locality of MNHN 0000-4259 specified by Koerber & Reis 2020:4 [ref. 37463] as Rio Inhomirim, village of Inhomirim, city of Magé, state of Rio de Janeiro, Brazil, 22°34'34"S, 43°11'05"W. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

laevigatus, Callichthys Valenciennes [A.] 1834:Pl. 5 (fig. 2) [Voyage dans l'Amérique méridionale; ref. 20720] Buenos Aires, Argentina. Holotype: in either of MNHN 0000-4271 (2), 0000-4272 (2) Buenos Aires. Non-types: MNHN 0000-4274 (1) Trinidad. Type catalog: Bertin & Estève 1950 [ref. 19575] with syntypes; technically the unique holotype is the figured specimen if it can be determined, Ferraris 2007:127 [ref. 29155]. Name available from plate, description in Valenciennes 1847:7 [ref. 5010]. Pl. 5 was published in 1834. See also Cuvier & Valenciennes 1840:314 [ref. 1008]. There is a unique holotype if it can be distinguished. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Burgess 1989:364 [ref. 12860], Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:127 [ref. 29155] dated to 1836, Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

lakoi, Aspidoras Miranda Ribeiro [P. de] 1949:143, Fig. 1 [Revista Brasileira de Biologia v. 9 (no. 2); ref. 13023] Córrego na floresta do Grotão, Frazenda da Cachoeira, Muncípio de Passos, Minas Gerais State, Brazil. Holotype (unique): MNRJ 5292. Type catalog: Miranda Ribeiro 1959:8 [ref. 10392], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras lakoi Miranda Ribeiro 1949 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:585 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:76 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras lakoi Miranda Ribeiro 1949. Callichthyidae: Corydoradinae. Distribution: South America: rio Grande drainage, upper Paraná River basin, Minas Gerais, Brazil. Habitat: freshwater.

lamberti, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1986:71, Figs. 16, 33D [Revue française d'Aquariologie Herpétologie v. 12 (no. 3) [for 1985]; ref. 8061] Downstream of Río Huytoyacu, right tributary of Río Pastaza, about 40 kilometers north of Lago Rimachi, 4°13'S, 76°38'W, Loreto, Peru. Holotype: ZMA 119335. Paratypes: ZMA 119336 (2). Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras lamberti Nijssen & Isbrücker 1986 -- (Burgess 1989:366 [ref. 12860], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis lamberti (Nijssen & Isbrücker 1986) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis lamberti (Nijssen & Isbrücker 1986). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon basin (Peru and Ecuador). Habitat: freshwater.

latus, Corydoras Pearson [N. E.] 1924:19, Pl. 3 (fig. 1) [Indiana University Studies v. 11 (no. 64); ref. 3396] Lagoons, Lago Rojoagua [Rogoagua], Río Beni basin, Upper Amazon system, Beni, Bolivia, elevation 500-1500 feet. Holotype (unique): CAS 36452 [ex IU 17278]. Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras latus Pearson 1924 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Ohara et al. 2016:548 [ref. 34772], Bono et al. 2019:19 [ref. 36480]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus latus (Pearson 1924). Callichthyidae: Corydoradinae. Distribution: South America: Beni River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

leopardus, Corydoras Myers [G. S.] 1933:188 [The Aquarium, Philadelphia v. 2 (no. 8); ref. 19248] Brazil (probably from a Brazilian coastal river south of the Amazon River). Lectotype: USNM 93305. Paralectotypes: USNM 93306 (1). Type information: Ferraris & Vari 1992:14 [ref. 19771]. Type catalog: Ferraris 2007:119 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:197 [ref. 6910]; Myers use of holotype/paratype in 1935 not acceptable as lectotype designation; paralectotype is a juvenile of Corydoras trilineatus according to Nijssen & Isbrücker. Appeared in more detail in Myers 1935:10 [ref. 3109]. Isbrücker 2001:228 [ref. 26805] gives a more detailed locality. •Valid as Corydoras leopardus Myers 1933 -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis leopardus (Myers 1933) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis leopardus (Myers 1933). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Bolivia, Ecuador and Peru). Habitat: freshwater.

leucomelas, Corydoras Eigenmann [C. H.] & Allen [W. R.] 1942:178, Pl. 12 (fig. 4) [Fishes of western South America; ref. 1246] Yarinacocha, cutoff lake at right bank of Río Pacaya, near Sarayacu, about 5°15'S, 74°15'W, Upper Amazon, Peru. Holotype (unique): CAS 36561 [ex IU 15818]. Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras leucomelas Eigenmann & Allen 1942 -- (Nijssen & Isbrücker 1980:198 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:366 [ref. 12860], Grant 1998:43 [ref. 23454], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma leucomelas (Eigenmann & Allen 1942) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma leucomelas (Eigenmann & Allen 1942). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Bolivia, Colombia, Ecuador and Peru). Habitat: freshwater.

littoralis, Callichthys Hancock [J.] 1828:244 [Zoological Journal, London v. 4; ref. 18242] Demerara, Guyana. Holotype: BMNH 1996.7.11.1. Type catalog: Ferraris 2007:127 [ref. 29155]. Uncertain if name was based on 1 or more than 1 specimen. •Mention -- (Malabarba 1989:148 [ref. 14217]). •Valid as Hoplosternum littorale (Hancock 1828) [sometimes as littoralis in earlier literature] -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], Gómez & Chebez 1996:61 [ref. 23791], Fernández & Butí 1996:254 [ref. 22775], Reis 1997:302 [ref. 22747], de Oliveira & de Moraes Junior 1997:1 [ref. 23461], Sverlij et al. 1998:65 [ref. 27632], Britski et al. 1999:125 [ref. 24147], Román-Valencia et al. 1999:60 [ref. 24926], Butí & Cancino 1999:71 [ref. 25277], Fuller et al. 1999:220 [ref. 25838], Le Bail et al. 2000:180 [ref. 24549], Lasso et al. 2001:98 [ref. 25928], Reis in Reis et al. 2003:304 [ref. 27061], López et al. 2003:43 [ref. 27366], Casciotta et al. 2003:131 [ref. 28130], Nelson et al. 2004:83 [ref. 27807], Menni 2004:81 [ref. 28131], Ferraris 2007:127 [ref. 29155], Scharpf 2007:5 [ref. 30398], Page & Burr 2011:369 [ref. 31215], Di Dario et al. 2013:262 [ref. 37503], Page et al. 2013:81 [ref. 32708], Phillip et al. 2013:19 [ref. 32896], Barriga Salazar 2014:111 [ref. 35745], Litz & Koerber 2014:23 [ref. 33622], Ramos et al. 2014:4 [ref. 35321], Sarmiento et al. 2014:149, 190 [ref. 35004], Mirande & Koerber 2015:39 [ref. 35117], Bertaco et al. 2016:416 [ref. 34561], Melo et al. 2016:376 [ref. 35317], Nión et al. 2016:31 [ref. 35565], Costa et al. 2017:45 [ref. 35684], DoNascimiento et al. 2017:72 [ref. 35633], Koerber et al. 2017:56 [ref. 35267], Robins et al. 2018:143 [ref. 35886], Urbano-Bonilla et al. 2018:76 [ref. 35773], Azevedo-Santos et al. 2020:5 [ref. 39606], Reis et al. 2020:465 [ref. 38364], Silva et al. 2020:10 [ref. 37809], Silvano et al. 2020:222 [ref. 38135], Meza-Vargas et al. 2021:25 [ref. 39298], Brandão et al. 2022:153 [ref. 40464], Koerber et al. 2022:46 [ref. 39235], Taphorn et al. 2022:45 [ref. 41297], Cortés Hernández et al. 2023:457 [ref. 40760], Giora & Wingert 2023:64 [ref. 41026], Loureiro et al. 2023:92 [ref. 40506], Page et al. 2023:80 [ref. 40505], Quintela et al. 2023:6 [ref. 40727], Vieira et al. 2023:20 [ref. 40759], Vieira-Guimarães et al. 2024:43 [ref. 41258]). Current status: Valid as Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Distribution: Widespread in South America. Introduced in Florida (U.S.A). Habitat: freshwater.

longibarbis, Dianema Cope [E. D.] 1872:276, Pl. 7 (figs. 1, 1a-b) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Syntypes: ANSP 8285 (1), 21540 (1). Type catalog: Böhlke 1984:32 [ref. 13621] as holotype and paratypes, Ferraris 2007:127 [ref. 29155]. •Valid as Dianema longibarbis Cope 1872 -- (Ovchynnyk 1967:37 [ref. 37559], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], Lasso et al. 2001:98 [ref. 25928], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:127 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], DoNascimiento et al. 2017:72 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). Current status: Valid as Dianema longibarbis Cope 1872. Callichthyidae: Callichthyinae. Distribution: South America: Amazon River basin (Brazil, Ecuador, Colombia, Bolivia and Peru). Habitat: freshwater.

longifilis, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:317 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana. Holotype (unique): MNHN 0000-4284. Type catalog: Bertin & Estève 1950:66-67 [ref. 19575], Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

longipinnis, Corydoras Knaack [J.] 2007:36, Figs. 1-28, 31-39 [Vertebrate Zoology v. 57 (no. 1); ref. 29221] Río Dulce, some 20 kilometers downstream from Termas de Río Hondo, Santiago del Estero Province, Argentina, about 27°29'29"S, 64°41'58"W. Holotype: AI 221. Paratypes: AI 222 (1); MTDF 30765 (1), 30766 (1); ZMA 123751 (1), 123752 (1); ZMB 33766 (1), 33767 (1). Plus 62 uncataloged specimens and 114 non-type specimens. See Koerber 2007:1 [ref. 29269] for correction of the type locality. See Tencatt et al. 2016:[10] [ref. 34388] for comments on the type material. •Valid as Corydoras longipinnis Knaack 2007 -- (Koerber 2007:1 [ref. 29269], Calviño & Alonso 2010:199 [ref. 30829], Koerber 2011:5 [ref. 31122], Tencatt et al. 2014:78 [ref. 33230], Tencatt et al. 2014:91 [ref. 33232], Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:40 [ref. 35117], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Bertaco et al. 2016:416 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Grant 2018:26 [ref. 36057], Koerber et al. 2020:5 [ref. 37480], Reis et al. 2020:464 [ref. 38364], Koerber et al. 2021:6 [ref. 38894], Giora & Wingert 2023:61 [ref. 41026], Koerber et al. 2023:6 [ref. 40355], Loureiro et al. 2023:94 [ref. 40506]). •Valid as Hoplisoma longipinne (Knaack 2007) -- (Dias et al. 2024:26 [ref. 41219] as longipinnis). Current status: Valid as Hoplisoma longipinne (Knaack 2007). Callichthyidae: Corydoradinae. Distribution: South America: Dulce River basin (Argentina), and lower rio Paraná (Brazil and Uruguay). Habitat: freshwater.

longirostris, Corydoras melanistius Hoedeman [J. J.] 1953:17, Fig. 13 [Encyclopaedie voor den aquariumhouder; ref. 19665] Amazon area. Holotype: A.G. 92/139 (lost). Type catalog: Ferraris 2007:113 [ref. 29155]. Types not preserved (Nijssen & Isbrücker 1980:194 [ref. 6910]). Dated 1953 by Hoedeman 1954:264 [ref. 35345]. •Synonym of Corydoras ambiacus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155]). Current status: Synonym of Brochis ambiacus (Cope 1872). Callichthyidae: Corydoradinae. Habitat: freshwater.

loretoensis, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1986:68, Figs. 4-5, 33A [Revue française d'Aquariologie Herpétologie v. 12 (no. 3) [for 1985]; ref. 8061] Right bank of Río Nanay, Loreto, Maynas Province, Peru. Holotype: NRM 26079. Paratypes: ANSP 121620 (32); NRM 28562 (67), 28591 (12); ZMA 119192 (10). Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras loretoensis Nijssen & Isbrücker 1986 -- (Burgess 1989:366 [ref. 12860], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:119 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Espíndola et al. 2018:[18] [ref. 35899], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma loretoense (Nijssen & Isbrücker 1986) -- (Dias et al. 2024:26 [ref. 41219] as loretoensis). Current status: Valid as Hoplisoma loretoense (Nijssen & Isbrücker 1986). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Peru and Ecuador). Habitat: freshwater.

loricatus, Callichthys Gronow [L. T.] in Gray 1854:157 [Catalogue of fish collected and described by Laurence Theodore Gronow; ref. 1911] Tropical America. Holotype (unique): BMNH 1853.11.12.194. Type information: Wheeler 1989:212, Fig. 2B [ref. 21873]. Type catalog: Ferraris 2007:111 [ref. 29155]. •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

loxozonus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:67, Fig. 12 [Beaufortia v. 33 (no. 5); ref. 8293] Meta, Lomalinda near Río Ariari, tributary to Río Guaviare, southeast of Villavicencio, Colombia. Holotype (unique): ANSP 150170. Type catalog: Ferraris 2007:119 [ref. 29155]. •Valid as Corydoras loxozonus Nijssen & Isbrücker 1983 -- (Burgess 1989:366 [ref. 12860], Isbrücker 2001:228 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma loxozonum (Nijssen & Isbrücker 1983) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma loxozonum (Nijssen & Isbrücker 1983). Callichthyidae: Corydoradinae. Distribution: South America: Meta River basin, Colombia. Habitat: freshwater.

lymnades, Corydoras Tencatt [L. F. C.], Vera-Alcaraz [H. S.], Britto [M. R.] & Pavanelli [C. S.] 2013:258, Figs. 1, 2a, 3, 4 [Neotropical Ichthyology v. 11 (no. 2); ref. 32752] Minas Gerais, Guada-Mor, rio Guarda-Mor, rio São Francisco basin, 17°46'18"S, 47°05'43"W, Brazil. Holotype: MNRJ 40186. Paratypes: Many at MCP, MNRJ, NUP. Type catalog: Oliveira et al. 2022:12 [ref. 39255]. •Valid as Corydoras lymnades Tencatt, Vera-Alcaraz, Britto & Pavanelli 2013 -- (Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Silva et al. 2020:10 [ref. 37809]). •Valid as Hoplisoma lymnades (Tencatt, Vera-Alcaraz, Britto & Pavanelli 2013) -- (Dias et al. 2024:26 [ref. 41219]). Current status: Valid as Hoplisoma lymnades (Tencatt, Vera-Alcaraz, Britto & Pavanelli 2013). Callichthyidae: Corydoradinae. Distribution: South America: Rio São Francisco basin (Brazil). Habitat: freshwater.

maclurei, Corydoras Tencatt [L. F. C.], Gomes [V. de C.] & Evers [H.-G.] 2023:4, Figs. 1-9, 11 [Neotropical Ichthyology v. 21 (no. 2): e230023; ref. 40180] Small stream tributary to the rio Araza, a bigger affluent of the rio Inambari, itself a tributary to the rio Madre de Dios, rio Madeira basin, Camanti District, Quispicanchi Province, Cusco Region, Peru, 13°16'18"S, 70°46'33"W. Holotype: MUSM 70671. Paratypes: CITL, CPUFMT, MNRJ, MZUSP, NUP. •Valid as Corydoras maclurei Tencatt, Gomes & Evers 2023. •Valid as Osteogaster maclurei (Tencatt, Gomes & Evers 2023) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster maclurei (Tencatt, Gomes & Evers 2023). Callichthyidae: Corydoradinae. Distribution: South America: Inambari River drainage, Madre de Dios River subbasin, Madeira basin, Quispicanchi Province, Peru. Habitat: freshwater.

macropterus, Corydoras Regan [C. T.] 1913:232 [Annals and Magazine of Natural History (Series 8) v. 11 (no. 62); ref. 14976] Paranaguá, 25°32'S, 48°36'W, Paraná, Brazil. Lectotype: BMNH 1913.1.1.11. Paralectotypes: BMNH 1913.1.1.12-13 (2), ZMA 109953 [ex BMNH 1913.1.1.14] (1). Type catalog: Nijssen et al. 1982:46 [ref. 19236], Ferraris 2007:130 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:206 [ref. 6910]. For information on type locality see Buckup & Malabarba 1990 [ref. 16740]. •Valid as Corydoras macropterus Regan 1913 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:366 [ref. 12860], Britski et al. 1999:126 [ref. 24147], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061]). •Valid as Scleromystax macropterus (Regan 1913) -- (Britto 2003:147 [ref. 27338], Britto & Reis 2005:481 [ref. 28458], Knaack 2007:36 [ref. 29221], Ferraris 2007:130 [ref. 29155], Litz & Koerber 2014:24 [ref. 33622], Ottoni et al. 2016:133 [ref. 34756], Britto et al. 2016:[9] [ref. 34806], Koerber et al. 2017:58 [ref. 35267], Reis et al. 2020:465 [ref. 38364], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax macropterus (Regan 1913). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers from São Paulo to Santa Catarina states and some upper Paraná River tributaries (Brazil, Paraguay and Uruguay). Habitat: freshwater.

macrosteus, Corydoras Regan [C. T.] 1912:219 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Rio Piracicaba, São Paulo, Brazil. Lectotype: BMNH 1905.6.9.12. Paralectotypes: BMNH 1905.6.9.13-15 (3). Type catalog: Ferraris 2007:112 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:208 [ref. 6910]. The specific name [from the Greek makro + osteon = long bone] is treated as an indeclinable noun. •Doubtful species -- (Isbrücker 2001:229 [ref. 26805]). •Synonym of Corydoras aeneus (Gill 1858) -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:112 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:57 [ref. 35267]). •Possibly valid as Corydoras macrosteus Regan 1912 -- (Tencatt et al. 2023:21 [ref. 40180]). •Possibly valid as Osteogaster macrosteus (Regan 1912). Current status: Uncertain as Osteogaster macrosteus (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: Rio Piracicaba drainage, São Paulo State, Brazil [if valid]. Habitat: freshwater.

maculatus, Corydoras Steindachner [F.] 1879:32 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Classe v. 16 (no. 4); ref. 20480] La Plata [river], Argentina. Type catalog: Ferraris 2007:122 [ref. 29155]. No types known, and species not included in subsequent detailed work (Steindachner 1879 [ref. 4228]), but may be referable to Corydoras marmoratus found in main work [ref. 4228] but not abstract [ref. 20480]. Original entry as "Corydoras maculatus Steind. = Coryd. (Callichthys) punctatus Valenc. partim, nec. Bloch.". Probably later described as "Corydoras marmoratus n. sp.? (an. Coryd. punctatus sp. Bloch, var. argentina Steind.)". See also Nijssen & Isbrücker 1980:204 [ref. 6910], Grant 2018:28 [ref. 36057]. •Doubtful species -- (Isbrücker 2001:229 [ref. 26805]). •Synonym of Corydoras paleatus (Jenyns 1842) -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Grant 2018:26 [ref. 36057]). •Not a synonym of Corydoras paleatus (Jenyns 1842) -- (Tencatt et al. 2016:[10] [ref. 34388]). Replacement Name. Current status: Synonym of Hoplisoma paleatum (Jenyns 1842). Callichthyidae: Corydoradinae. Habitat: freshwater.

maculifer, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1971:183, Fig. 1 [Beaufortia v. 18 (no. 239); ref. 7697] Sangadina stream, 2 kilometers west of Chavantina, 14°45'S, 52°20'W, tributary of Rio das Mortes, Mato Grosso State, Brazil. Holotype: BMNH 1970.10.30.3. Paratypes: BMNH 1970.10.30.4 (1), 1970.10.30.5-6 (2); ZMA 110681 (1). Type catalog: Nijssen et al. 1982:46 [ref. 19236], Ferraris 2007:120 [ref. 29155]. •Valid as Corydoras maculifer Nijssen & Isbrücker 1971 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:119 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Britto 2016:[1] [ref. 34336], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Tencatt & Ohara 2016:432 [ref. 34627], Lima & Sazima 2017:30 [ref. 35111], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras maculifer Nijssen & Isbrücker 1971. Callichthyidae: Corydoradinae. Distribution: South America: upper Araguaia River basin, Brazil. Habitat: freshwater.

maculocephala, Cascadura Ellis [M. D.] 1913:387, Pl. 25 (fig. 3) [Annals of the Carnegie Museum v. 8 (nos 3-4) (art. 13); ref. 1270] Rio Uruguay at Uruguayana, Brazil. Holotype (unique): FMNH 54878 [ex CM 3539]. Type catalog: Henn 1928:83 [ref. 12305], Ibarra & Stewart 1987:21 [ref. 12367], Ferraris 2007:128 [ref. 29155]. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:303 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

maculosus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:119, Fig. 11 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Rio Paiaiá, into headwaters of Rio Itapicurú, about 11°S, 40°30'W, Bahia State, Brazil. Holotype: FMNH 54810 [ex CM 3457]. Paratypes: CAS 42521 [ex IU 13319; CM 3457] (1); FMNH 54808-09 (3, 1), 78361 (2); ZMA 113595 (1). Type catalog: Nijssen et al. 1982:38 [ref. 19236], Ibarra & Stewart 1987:11 [ref. 12367], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras maculosus Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:216 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Britto et al. 2005:478 [ref. 28459], Ferraris 2007:109 [ref. 29155], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Silva et al. 2020:10 [ref. 37809], Tencatt et al. 2022:85 [ref. 39729], Dias et al. 2024:24 [ref. 41219], Vieira-Guimarães et al. 2024:43 [ref. 41258]). Current status: Valid as Aspidoras maculosus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: upper Itapicurú River basin, Bahia State (Brazil). Habitat: freshwater.

magdalenae, Hoplosternum Eigenmann [C. H.] in Ellis 1913:412 [Annals of the Carnegie Museum v. 8 (nos 3-4) (art. 13); ref. 1270] Soplaviento, Colombia. Holotype: FMNH 56281 [ex CM 5081]. Paratypes: (60, CM and IU) ?CAS 76513 [ex IU 13970] (4), 76516 [ex IU 12836] (orig. 11, now 7); FMNH 56282-83 (11, 1); MCP 17307 [ex CAS 76516] (4). Type catalog: Henn 1928:83 [ref. 12305], Ibarra & Stewart 1987:47 [ref. 12367], Ferraris 2007:128 [ref. 29155]. Author is C. H. Eigenmann. Appeared above on 5 May; also appeared in Eigenmann (June) 1913:30 [ref. 1229]. •Valid as Diasternum magdalanae (Eigenmann 1913) -- (Franz 2001:000 [ref. 25831]). •Valid as Hoplosternum magdalenae Eigenmann 1913 -- (Burgess 1989:364 [ref. 12860], Reis 1997:305 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633]). Current status: Valid as Hoplosternum magdalenae Eigenmann 1913. Callichthyidae: Callichthyinae. Distribution: Magdalena and Sinu River basins: Colombia and Venezuela. Habitat: freshwater.

mamore, Corydoras Knaack [J.] 2002:16, Figs. [VDA--aktuell v. 1 (2003); ref. 26481] Rio Ibare, Mamoré system at Moxos, Dep. Beni, Bolivia, 14°51.131'S, 65°08.360'W, elevation 161 meters. Holotype: MTD F 26741. Paratypes: CIRA-UTB 1002 (1), MTD F 26742 (1), ZMA 123592 (1). Type catalog: Zarske 2003:24 [ref. 27474], Ferraris 2007:120 [ref. 29155]. Original as mamoré but must be corrected to mamore. Apparently was available on 11 Dec. 2002, not March 2003. •Valid as Corydoras mamore Knaack 2002 -- (Ferraris 2007:120 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus mamore (Knaack 2002). Callichthyidae: Corydoradinae. Distribution: South America: Mamoré River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

marianae, Aspidoras Leão [M. D. V.], Britto [M. R.] & Wosiacki [W. B.] 2015:578, Figs. 1-6 [Zootaxa 3986 (no. 5); ref. 33891] Pará, Castelo de Sonhos municipality, unnamed stream tributary to the Rio Curuá, itself a tributary to the Rio Iriri, Rio Xingu basin, Brazil, 8°26'44.7"S, 55°09'25.0"W. Holotype: MPEG 26409. Paratypes: INPA, MCP, MPEG, MNRJ. •Valid as Aspidoras marianae Leão, Britto & Wosiacki 2015 -- (Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227]). •Synonym of Aspidoras poecilus Nijssen & Isbrücker 1976 -- (Tencatt et al. 2022:96 [ref. 39729]). Current status: Synonym of Aspidoras poecilus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Habitat: freshwater.

marmoratus, Corydoras Steindachner [F.] 1879:26, Pl. 5 (fig. 1) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 41; ref. 4228] Buenos Aires, Argentina. Lectotype: NMW 5538 [ex NMW 47258]. Paralectotypes: NMW 47258 (2), 46775-77 (2, 1, 2); ZMA 110477-78 (1, 1). Type catalog: Nijssen et al. 1982:46 [ref. 19236], Ferraris 2007:122 [ref. 29155]. See Tencatt et al. 2016:[10] [ref. 34388] for comments on the type material. Species not included in earlier abstract [ref. 20480]. Originally described as "Corydoras marmoratus n. sp.? (an. Coryd. punctatus sp. Bloch, var. argentina Steind.)"; may correspond to Corydoras maculatus of abstract. See also Grant 2018:28 [ref. 36057]. Lectotype selected by Nijssen & Isbrücker 1980:204 [ref. 6910]. •Status uncertain -- (Isbrücker 2001:229 [ref. 26805]). •Synonym of Corydoras paleatus (Jenyns 1842) -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117], Tencatt et al. 2016:[3] [ref. 34388], Grant 2018:28 [ref. 36057]). •Synonym of Hoplisoma paleatum (Jenyns 1842). Current status: Synonym of Hoplisoma paleatum (Jenyns 1842). Callichthyidae: Corydoradinae. Habitat: freshwater.

melampterus, Callichthys Cope [E. D.] 1872:275, Pl. 14 (figs. 4-5) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Río Ambyiacu, Peru. Lectotype: ANSP 8318. Paralectotypes: ANSP 8319-28 (10, 1 c&s). Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:128 [ref. 29155]. Lectotype selected by Reis 1997:303 [ref. 22747]. •Valid as Cataphractops melampterus (Cope 1872) -- (Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860]). •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

melanistius, Corydoras Regan [C. T.] 1912:216 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Essequibo River, Guyana. Lectotype: BMNH 1864.1.21.86. Paralectotypes: BMNH 1864.1.21.87 (1). Type catalog: Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1967:32 [ref. 7981]. •Valid as Corydoras melanistius Regan 1912 -- (Ovchynnyk 1967:37 [ref. 37559], Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:120 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], DoNascimiento et al. 2017:73 [ref. 35633], Taphorn et al. 2022:45 [ref. 41297], Tencatt et al. 2023:20 [ref. 40562]). •Valid as Hoplisoma melanistium (Regan 1912) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma melanistium (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers (Colombia, French Guiana, Guyana, Suriname, ?Venezuela). Habitat: freshwater.

melanotaenia, Corydoras Regan [C. T.] 1912:217 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Honda, Río Meta system of Río Orinoco, Tolima, Honda, 12°21'N, 71°47'W, Colombia. Lectotype: BMNH 1909.7.23.41. Paralectotype: BMNH 1909.7.23.42 (1). Type catalog: Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:207 [ref. 6910]. •Valid as Corydoras melanotaenia Regan 1912 -- (Nijssen & Isbrücker 1980:208 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633], Tencatt et al. 2023:21 [ref. 40180]). •Valid as Osteogaster melanotaenia (Regan 1912) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster melanotaenia (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin, Colombia. Habitat: freshwater.

melini, Corydoras Lönnberg [E.] & Rendahl [H.] 1930:1, Fig. 1 [Arkiv för Zoologi v. 22 A (no. 5); ref. 16300] Iuaretê (0°35'N, 69°13'W) at confluence of Rio Papurí and Rio Uaupés, Rio Negro system, Amazonas, Brazil. Lectotype: NRM 11091. Paralectotypes: NRM 10142 (4). Type catalog: Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:209 [ref. 6910]. •Valid as Corydoras melini Lönnberg & Rendahl 1930 -- (Ovchynnyk 1967:37 [ref. 37559], Nijssen & Isbrücker 1980:209 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:120 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma melini (Lönnberg & Rendahl 1930) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma melini (Lönnberg & Rendahl 1930). Callichthyidae: Corydoradinae. Distribution: South America: Brazil, Colombia, Ecuador and Peru. Habitat: freshwater.

menezesi, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:120, Fig. 12 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Rio Granjeiro at Crato, 7°10'S, 39°25'W, tributary on left bank of Rio Salgado, Ceará, State, Brazil. Holotype: UMMZ 147336. Paratypes: UMMZ 147340 (1), 195951 (21, 1 c&s); ZMA 113596 (5). Type catalog: Nijssen et al. 1982:39 [ref. 19236], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras menezesi Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227]). •Synonym of Aspidoras raimundi (Steindachner 1907) -- (Tencatt et al. 2022:121 [ref. 39729]). Current status: Synonym of Aspidoras raimundi (Steindachner 1907). Callichthyidae: Corydoradinae. Habitat: freshwater.

mephisto, Aspidoras Tencatt [L. F. C.] & Bichuette [M. E.] 2017:3, Figs. 3-5, 6a, 7-10, 12, 13a, 14 [PLoS ONE v. 12 (no. 3): e0171309; ref. 35168] Anésio III cave, Posse, Tocantins River basin, Goiás, Brazil, 14°05'27.7"S, 46°22'59.6"W. Holotype: MNRJ 48268. Paratypes: LESCI, NUP, MCP, MZUSP, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:11 [ref. 39255]. •Valid as Aspidoras mephisto Tencatt & Bichuette 2017 -- (Tencatt et al. 2022:95 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras mephisto Tencatt & Bichuette 2017. Callichthyidae: Corydoradinae. Distribution: South America: Anésio-Russão cave system, upper rio Tocantins basin (Goiás, Brazil). Habitat: freshwater.

meridionalis, Corydoras Ihering [R. von] 1911:380 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Colonia Hansa [now Corupá], near Jaraguá do Sul, Jaraguá river basin, ca 26°21'S, 48°29'W, Santa Catharina State, Brazil. Lectotype: MZUSP 426. Paralectotypes: MZUSP 140670 (2). Type catalog: Britski 1969:200 [ref. 12401], Nijssen & Isbrücker 1980:205 [ref. 6910], Ferraris 2007:116 [ref. 29155]. Lectotype selected by Britski & Mendonça 2010:92 [ref. 30773]. •Synonym of Corydoras ehrhardti Steindachner 1910 -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Isbrücker 2001:224 [ref. 26805], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:116 [ref. 29155], Britski & Mendonça 2010:91 [ref. 30773], Koerber et al. 2015:3 [ref. 35179], Koerber et al. 2017:6 [ref. 35083], Koerber et al. 2017:7 [ref. 35632]). •Synonym of Hoplisoma ehrhardti (Steindachner 1910). Current status: Synonym of Hoplisoma ehrhardti (Steindachner 1910). Callichthyidae: Corydoradinae. Habitat: freshwater.

metae, Corydoras Eigenmann [C. H.] 1914:230 [Indiana University Studies v. 2 (no. 23); ref. 11065] Barrigona [Berrigón], Río Meta, Colombia. Holotype (unique): CAS 36447 [ex IU 13451]. Type catalog: Ferraris 2007:120 [ref. 29155]. Holotype is figured in Eigenmann 1916: Pl. 14 [ref. 1233]. •Valid as Corydoras metae Eigenmann 1914 -- (Nijssen & Isbrücker 1980:208 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:230 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma metae (Eigenmann 1914) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma metae (Eigenmann 1914). Callichthyidae: Corydoradinae. Distribution: South America: Meta River basin, Colombia. Habitat: freshwater.

micracanthus, Corydoras Regan [C. T.] 1912:211 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Salta [Lesser, Bermejo River basin], 24°46'S, 65°28'W, Argentina [probably 24°40'39.50"S, 65°28'32.64"W]. Lectotype: BMNH 1897.1.27.8. Paralectotypes: BMNH 1897.1.27.9-14 (6), ZMA 109951 [ex BMNH 1897.1.27.15] (1). Additional material: BMNH (2) Salta, Argentina. Type catalog: Nijssen et al. 1982:46-47 [ref. 19236], Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:206 [ref. 6910]. Information on type locality see Koerber & Terán 2021:140 [ref. 38314]. •Valid as Corydoras micracanthus Regan 1912 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:230 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], López et al. 2003:42 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:120 [ref. 29155], Calviño & Alonso 2010:199, 206 [ref. 30829], Mirande & Koerber 2015:40 [ref. 35117], Ohara et al. 2016:548 [ref. 34772], Koerber & Terán 2021:143 [ref. 38314]). •Valid as Hoplisoma micracanthus (Regan 1912) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma micracanthus (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: upper Bermejo River basin (Salta Province, Argentina). Habitat: freshwater.

microcephalus, Corydoras Regan [C. T.] 1912:211 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] La Plata, Buenos Aires, Argentina. Lectotype: BMNH 1890.3.12.4. Paralectotypes: BMNH 1890.3.12.5-6 (3). Type catalog: Ferraris 2007:122 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:204 [ref. 6910]. •Synonym of Corydoras paleatus (Jenyns 1842) -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Mirande & Koerber 2015:40 [ref. 35117]). •Doubtful species -- (Isbrücker 2001:230 [ref. 26805]). •Valid as Corydoras microcephalus Regan 1912 -- (Knaack 2007:29 [ref. 29220], Tencatt et al. 2016:[10] [ref. 34388]). •Valid as Hoplisoma microcephalum (Regan 1912) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma microcephalum (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: Argentina. Habitat: freshwater.

microgalaeus, Aspidoras Britto [M. R.] 1998:364, Figs. 3b, 4b, 5b, 6a, 8-9 [Ichthyological Exploration of Freshwaters v. 8 (no. 4); ref. 23327] Small tributary of rio Culuene, km 86 of Paranatinga-Canarana road, Rio Xingu basin, 14°00'S, 54°38'W, Mato Grosso State, Brazil. Holotype: MZUSP 51209. Paratypes: MCP 19295 [not 12295] (4); MZUSP 51210 (4); UFRJ 1247 (3, 2 c&s), 1385 (2); UMMZ 232103 (4). Type catalog: Ferraris 2007:109 [ref. 29155]. MCP paratype number incorrect in the original description. Name is a noun in apposition. •Valid as Aspidoras microgalaeus Britto 1998 -- (Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:578 [ref. 33891], Ottoni et al. 2016:132 [ref. 34756], Tencatt & Bichuette 2017:21 [ref. 35168]). •Synonym of Aspidoras poecilus Nijssen & Isbrücker 1976 -- (Tencatt et al. 2022:96 [ref. 39729]). Current status: Synonym of Aspidoras poecilus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Habitat: freshwater.

microps, Corydoras Eigenmann [C. H.] & Kennedy [C. H.] 1903:506 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 55; ref. 1260] Lagoon near Rio Branco, Mato Grosso, Brazil. Holotype: CAS 20662 [ex IU 9892]. Paratypes: AMNH 1245 (1); CAS 20664 [ex IU 9893] (orig. 3, now 1), 20665 [ex IU 9895] (2); IU 9894 (1); ZMB 16905 (1). Type catalog: Ferraris 2007:112 [ref. 29155]. •Valid -- (authors). •Status uncertain -- (Isbrücker 2001:230 [ref. 26805]). •Synonym of Corydoras aeneus (Gill 1858) -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:112 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:57 [ref. 35267]). •Possibly valid as Corydoras microps Eigenmann & Kennedy 1903 -- (Tencatt et al. 2023:21 [ref. 40180]). •Possibly valid as Osteogaster microps (Eigenmann & Kennedy 1903). Current status: Uncertain as Osteogaster microps (Eigenmann & Kennedy 1903). Callichthyidae: Corydoradinae. Distribution: South America: Paraguay River basin, Brazil, Uruguay and Argentina [if valid]. Habitat: freshwater.

multimaculatus, Corydoras Steindachner [F.] 1907:291 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 44 (no. 17) (for 4 July 1907); ref. 18799] Tributary of Rio Prêto near Santa Rita de Cassia, about 11°00'S, 44°30'W, Bahia Province, Brazil. Lectotype: NMW 46783. Paralectotypes: NMW 46781-82 (19, 17), 46784 (3); ZMA 110479 [ex NMW 46784] (8). Type catalog: Nijssen et al. 1982:47 [ref. 19236], Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:196 [ref. 6910]. •Valid as Corydoras multimaculatus Steindachner 1907 -- (Nijssen & Isbrücker 1980:196 [ref. 6910], Isbrücker & Nijssen 1992:13 [ref. 20559], Burgess 1989:366 [ref. 12860], Isbrücker 2001:230 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], Tencatt et al. 2013:262 [ref. 32752], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Silva et al. 2020:10 [ref. 37809]). •Valid as Hoplisoma multimaculatum (Steindachner 1907) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma multimaculatum (Steindachner 1907). Callichthyidae: Corydoradinae. Distribution: South America: Preto River basin (Bahia State, Brazil). Habitat: freshwater.

multiradiatus, Chaenothorax Orcés V. [G.] 1960:3, Fig. 1 [Ciencia y Naturaleza (Quito) v. 3; ref. 11938] Tributary of Río Lagartococha near town of Garza-Cocha, upper Río Napo system, Province Napo, Ecuador. Holotype (unique): USNM 200739 [ex author's coll. 4280]. Type catalog: Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:120 [ref. 29155]. •Valid as Chaenothorax multiradiatus Orcés V. 1960 -- (Ovchynnyk 1967:36 [ref. 37559]). •Valid as Corydoras multiradiatus (Orcés V. 1960) -- (Ferraris 2007:120 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis multiradiatus (Orcés V. 1960) -- (Nijssen & Isbrücker 1970:166 [ref. 22239], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], Isbrücker 2001:218 [ref. 26805], Reis in Reis et al. 2003:293 [ref. 27061], Barriga Salazar 2014:111 [ref. 35745], Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis multiradiatus (Orcés V. 1960). Callichthyidae: Corydoradinae. Distribution: South America: Bolivia, Ecuador and Peru. Habitat: freshwater.

myersi, Corydoras Miranda Ribeiro [P. de] 1942:427, Fig. 1 [Revista Brasileira de Biologia v. 2 (no. 4); ref. 10389] Rio Javari, tributary to Rio Solimões, near Benjamin Constant (4°23'S, 69°59'W), Amazonas, Brazil. Holotype: MNRJ 3.626. Paratypes: MNRJ 3.627 (now 22); USNM 163252 [ex MNRJ 3.627] (2); ZMA 115272 (4). Type information/catalog: Miranda Ribeiro 1959:12 [ref. 10392]. Nijssen et al. 1982:47 [ref. 19236], Nijssen & Isbrücker 1980:210 [ref. 6910], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:123 [ref. 29155]. •Synonym of Corydoras rabauti LaMonte 1941 -- (Nijssen & Isbrücker 1980:210 [ref. 6910], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:123 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752]). •Synonym of Osteogaster rabauti (LaMonte 1941). Current status: Synonym of Osteogaster rabauti (LaMonte 1941). Callichthyidae: Corydoradinae. Habitat: freshwater.

nanus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:41, Pl. 5 (fig. 1) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Little tributaries of Gran-Rio between Ligoria (= Ligolio) and Awaradam Falls, Brokopondo, Suriname. Holotype: RMNH 25333. Paratypes: RMNH 25334 (4), ZMA 104642 (2). Type catalog: Nijssen et al. 1982:47 [ref. 19236], Ferraris 2007:120 [ref. 29155]. •Valid as Corydoras nanus Nijssen & Isbrücker 1967 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Burgess 1989:366 [ref. 12860], Le Bail et al. 2000:202 [ref. 24549], Isbrücker 2001:230 [ref. 26805], Knaack 2002:52 [ref. 27224], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], Ottoni et al. 2016:133 [ref. 34756], Ohara et al. 2016:548 [ref. 34772]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus nanus (Nijssen & Isbrücker 1967). Callichthyidae: Corydoradinae. Distribution: South America: Suriname and Maroni River basins, Suriname and Iracoubo River basin, French Guiana. Habitat: freshwater.

napoensis, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1986:73, Figs. 25-26, 33E [Revue française d'Aquariologie Herpétologie v. 12 (no. 3) [for 1985]; ref. 8061] Lagartococha, northern tributary of Río Aguarico, between 0°39'S, 75°16'W and 0°28'S, 75°21'W, Napo, Ecuador, elevation 200-220 meters. Holotype: ZMA 119226. Paratypes: FMNH 94676 (4, now 3), MZUSP 26341 (1), Quito coll. [ex FMNH 94676] (1), USNM 270358 (2), ZMA 119227 (13). Type catalog: Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:120 [ref. 29155]. •Valid as Corydoras napoensis Nijssen & Isbrücker 1986 -- (Burgess 1989:366 [ref. 12860], Isbrücker 2001:230 [ref. 26805], Knaack 2002:52 [ref. 27224], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Ottoni et al. 2016:133 [ref. 34756], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], see DoNascimiento et al. 2017:[16] [ref. 35679], Bono et al. 2019:22 [ref. 36480], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus napoensis (Nijssen & Isbrücker 1986). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin (Bolivia, Ecuador and Peru). Habitat: freshwater.

narcissus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1980:497, Fig. 2 [Netherlands Journal of Zoology v. 30 (no. 3); ref. 8680] Creek into Rio Ipixuna, 7°31'S, 63°16'W, 30 kilometers west of Humaitá, Rio Purus system, Amazonas, Brazil. Holotype (unique): ZMA 115178. Type catalog: Nijssen et al. 1982:47 [ref. 19236], Ferraris 2007:120 [ref. 29155]. •Valid as Corydoras narcissus Nijssen & Isbrücker 1980 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:230 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155], Britto et al. 2009:687 [ref. 30609], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Ohara 2016:432 [ref. 34627], Tencatt et al. 2019:[14] [ref. 36697], Bentley et al. 2021:196 [ref. 38185], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras narcissus Nijssen & Isbrücker 1980. Callichthyidae: Corydoradinae. Distribution: South America: Purus River drainage, middle Amazon River basin, Brazil. Habitat: freshwater.

nattereri, Corydoras Steindachner [F.] 1876:143 [95], Pl. 11 (fig. 1) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 74 (1. Abth.); ref. 4225] Affluent of Rio Parahyba, 3 miles up, Rio de Janeiro, Brazil. Neotype: MCZ 8229. Type catalog: Ferraris 2007:121 [ref. 29155]. On p. 95 of separate. Type from river basin of Parahyba or Jequitinhonha in the neighborhood of Rio de Janeiro is lost; neotype designated by Nijssen & Isbrücker 1980:3 [ref. 8681]. •Valid as Corydoras nattereri Steindachner 1876 -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Burgess 1989:366 [ref. 12860], Britto et al. 2002:735 [ref. 26546], Isbrücker 2001:230 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061] dated 1877, Shimabukuro-Dias et al. 2004:141 [ref. 27796], Knaack 2007:43 [ref. 29221], Ferraris 2007:121 [ref. 29155], Tencatt et al. 2014:91 [ref. 33232], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], Lima & Sazima 2017:30 [ref. 35111], Silva et al. 2020:10 [ref. 37809], Vieira-Guimarães et al. 2024:43 [ref. 41258]). •Valid as Hoplisoma nattereri (Steindachner 1876) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma nattereri (Steindachner 1876). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers, Espirito Santo to Paraná (eastern Brazil). Habitat: freshwater.

negro, Corydoras Knaack [J.] 2004:81, Figs. 22-29 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Negro (main stream), "Restgewässer", Río Blanco system, Raum Urubicha, Provincia Nuflo de Chavez, Departamento Santa Cruz, Bolivia, 15°31.502'S, 62°56.208'W. Holotype: MTD F 28472. Paratypes: CAS 219274 (2); CJK uncat. (157); CIRA-UTB 1083 (2); MTD F 28473 (1); ZMA 123.1000.738 (1), 123.1000.739 (1); ZMB 33534 (1), 33535 (1). Type catalog: Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras negro Knaack 2004 -- (Ferraris 2007:121 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras negro Knaack 2004. Callichthyidae: Corydoradinae. Distribution: South America: Blanco River drainage, Santa Cruz, Bolivia. Habitat: freshwater.

nijsseni, Corydoras elegans Sands [D. D.] 1989:45, Fig. [Practical Fishkeeping; ref. 20244] Tributary of the Rio Negro, Brazil. Syntypes: (several) RMNH 31625 and 31626 (4). Type catalog: Ferraris 2007:121 [ref. 29155]. See Isbrücker 2001:231 [ref. 26805] for figure correction. •Mention -- (Burgess & Finley 1996:168 [ref. 22901]). •Valid as Corydoras nijsseni Sands 1989 -- (Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Shimabukuro-Dias et al. 2004:141 [ref. 27796] as cf. nijsseni, Ferraris 2007:121 [ref. 29155]). •Valid as Gastrodermus nijsseni -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus nijsseni (Sands 1989). Callichthyidae: Corydoradinae. Distribution: South America: Negro River basin, Brazil. Habitat: freshwater.

noelkempffi, Corydoras Knaack [J.] 2004:94, Figs. 37-41 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río San Martin, río Itenez system, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia, 15°23.265'S, 61°29.758'W. Holotype: MTD F 28576. Paratypes: CIRA-UTB 1085 (2); CJK uncat. (32); MTD F 28477 (1); ZMA 123.1000.742 (1) and .743 (1). Type catalog: Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras noelkempffi Knaack 2004 -- (Ferraris 2007:121 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Brochis noelkempffi (Knaack 2004) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis noelkempffi (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

octocirrus, Corydoras Nijssen [H.] 1970:26, Fig. 12 [Beaufortia v. 18 (no. 230); ref. 7452] Marechal [Marchall] Creek, east of road between Paranam and Afobaka, 1.5 kilometers north of Marchall, Suriname River system, Suriname. Holotype: ZMA 106017. Paratypes: BMNH 1971.1.6.3-4 (2); CAS 14501 [ZMA 105.367] (2); IRSNB 469 (3), 471 (1), 528 (3, now 1); MZUSP [ex IRSNB 528] (2); RMNH 25337-39 (1, 4, 1), 25791 (2), 25795 (2), 25799 (4), 25806 (4), 25808 (4); USNM 204222 (2); ZMA 104655 (2), 105237-38 (3, 5), 105367 (14), 105871 (2), 105891 (2), 109066 (3). Type catalog: Nijssen et al. 1982:47-48 [ref. 19236], Walschaerts 1987:18 [ref. 20755], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:117 [ref. 29155]. •Valid as Corydoras octocirrus Nijssen 1970 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:366 [ref. 12860]). •Synonym of Corydoras geoffroy Lacepède 1803 -- (Isbrücker 1999:39 [ref. 24040], Isbrücker 2000:17 [ref. 26715], Isbrücker 2001:226 [ref. 26805], Reis in Reis et al. 2003:298 [ref. 27061], Ferraris 2007:117 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353]). Current status: Synonym of Corydoras geoffroy Lacepède 1803. Callichthyidae: Corydoradinae. Habitat: freshwater.

oelemariensis, Corydoras Nijssen [H.] 1970:29, Fig. 14 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at left bank of Oelemari River, near airstrip, Marowijne, Suriname. Holotype: IRSNB 472. Paratypes: BMNH 1971.1.6.1-2 (2), CAS 14502 [ex ZMA 108.111] (2), IRSNB 473 (orig. 82, now 42), MZUSP [ex IRSNB 473] (40), SMF 12099 (2); USNM 204221 (2); ZMA 108111 (82). Type catalog: Nijssen et al. 1982:48 [ref. 19236], Walschaerts 1987:19 [ref. 20755], Ferraris & Vari 1992:14 [ref. 19771]. •Synonym of Corydoras baderi Geisler 1969 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Le Bail et al. 2000:190 [ref. 24549], Isbrücker 2001:221 [ref. 26805], Reis in Reis et al. 2003:295 [ref. 27061]). •Synonym of Hoplisoma baderi (Geisler 1969). Current status: Synonym of Hoplisoma baderi (Geisler 1969). Callichthyidae: Corydoradinae. Habitat: freshwater.

oiapoquensis, Corydoras Nijssen [H.] 1972:425, Fig. 7 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Cumuri Creek at left bank of Oyapock River, French Guiana. Holotype: IRSNB 489. Paratypes: IRSNB 490 (orig. 17, now 9), 491 (1), 493 (orig. 27, now 12), 495 (orig. 22, now 10), 496 (orig. 51, now 29); MZUSP [ex IRSNB 490] (8), [ex IRSNB 493] (15), [ex IRSNB 495] (12), [ex IRSNB 496] (28); USNM 205869 [not 205868] (2); ZMA 110589-94 (10, 2, 4, 12, 8, 6). Type catalog: Nijssen et al. 1982:48 [ref. 19236], Walschaerts 1987:19 [ref. 20755], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:121 [ref. 29155]. Some types are also paratypes of Corydoras condiscipulus. •Valid as Corydoras oiapoquensis Nijssen 1972 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:366 [ref. 12860], Le Bail et al. 2000:204 [ref. 24549], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:121 [ref. 29155]). •Valid as Hoplisoma oiapoquense (Nijssen 1972) -- (Dias et al. 2024:27 [ref. 41219] as oiapoquensis). Current status: Valid as Hoplisoma oiapoquense (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: Oyapock River basin, Brazil and French Guiana. Habitat: freshwater.

oibaensis, Callichthys Ardila Rodríguez [C. A.] 2006:3, Figs. 2, 3A, 4A-C, 5A-C, 6A-B, 7, 8A-B [Dahlia (Revista de la Asociación Colombiana de Ictiólogos, ACICTIOS). v. 9; ref. 29567] Vereda Las Monjas, Río Oibita, tributary of Río Suárez, Departamento de Santander, Colombia, elevation 1450 meters. Holotype: CAR 251. Paratypes: CAR 250 (7); IMCN 3310 (2), CZUT-IC 1837 (2), IAvH-P 5730 (1), ICNMNH 13396 (2), MBUCV-V 32798 (2). Type catalog: Ferraris 2007:111 [ref. 29155]; DoNascimiento et al. 2016:409 [ref. 34787], Mojica & Agudelo-Zamora 2018:30 [ref. 36127]. Appeared first in ref. 28601 as unavailable -- distributed primarily to members of a symposium and not published. •Valid as Callichthys oibaensis Ardila Rodríguez 2006 -- (Ferraris 2007:111 [ref. 29155] dated 2005, DoNascimiento et al. 2017:72 [ref. 35633]). Current status: Valid as Callichthys oibaensis Ardila Rodríguez 2006. Callichthyidae: Callichthyinae. Distribution: Suárez River basin, Colombia. Habitat: freshwater.

orcesi, Corydoras pastazensis Weitzman [S. H.] & Nijssen [H.] 1970:120, Figs. 1, 6a [Beaufortia v. 18 (no. 233); ref. 7481] Río Conambo near village of Conambo, 1°55'S, 76°51'W, River Tigre system, Pastaza, Ecuador. Holotype: USNM 204358. Paratypes: BMNH 1970.4.17.3-4 (2); EPN 4172-4176 (3), 4480-4484b (2); USNM 203827-28 (2, 5); ZMA 110377-79 (2, 2, 2). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:122 [ref. 29155]. •Synonym of Corydoras pastazensis Weitzman 1963, but a valid subspecies as described -- (Nijssen & Isbrücker 1980:217 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040]). •Valid as Corydoras orcesi Weitzman & Nijssen 1970 -- (Isbrücker 2001:231 [26805], Lima & Sazima 2017:28 [ref. 35111]). •Synonym of Corydoras pastazensis Weitzman 1963 -- (Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Tencatt pers. comm. 9/24). Current status: Synonym of Corydoras pastazensis Weitzman 1963. Callichthyidae: Corydoradinae. Habitat: freshwater.

ornatus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:126, Figs. 1-3 [Bulletin Zoölogisch Museum, Universiteit van Amsterdam v. 5 (no. 15); ref. 7379] Rio Tapajós, 80 kilometers east of Jacareacanga, 6°09'S, 58°15'W, Brazil. Holotype: ZMA 114690. Paratypes: BMNH 1976.4.27.144 (1), USNM 216075 (1), ZMA 114691 (3), ZMH H5689 (1). Type catalog: Wilkens 1977:159 [ref. 22013], Nijssen et al. 1982:48 [ref. 19236], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras ornatus Nijssen & Isbrücker 1976 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:121 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Tencatt et al. 2022:33 [ref. 39741]). •Valid as Brochis ornatus (Nijssen & Isbrücker 1976) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis ornatus (Nijssen & Isbrücker 1976). Callichthyidae: Corydoradinae. Distribution: South America: lower Tapajós River drainage, Amazon basin, Brazil. Habitat: freshwater.

oronocoi, Hoplosternum Fowler [H. W.] 1915:229, Fig. 8 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 67; ref. 1392] La Pedrita, Caño Uracoa, Venezuela. Holotype (unique): ANSP 37895. Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:129 [ref. 29155]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.

orphnopterus, Corydoras Weitzman [S. H.] & Nijssen [H.] 1970:125, Fig. 3 [Beaufortia v. 18 (no. 233); ref. 7481] Lower Río Bobonaza between Montalvo (2°06'S, 76°59'W) and Chicherota (2°22'S, 76°38'W), Ecuador. Holotype: USNM 204361. Paratypes: USNM 204362 (1), ZMA 110383 (1). Type catalog: Nijssen et al. 1982:48 [ref. 19236], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras orphnopterus Weitzman & Nijssen 1970 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:121 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745] as orphonopterus). •Valid as Brochis orphnopterus (Weitzman & Nijssen 1970) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis orphnopterus (Weitzman & Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: Pastaza River basin, Ecuador. Habitat: freshwater.

ortegai, Corydoras Britto [M. R.], Lima [F. C. T.] & Hidalgo [M. H.] 2007:294, Figs. 1-3 [Neotropical Ichthyology v. 5 (no. 3); ref. 29283] Río Putumayo basin, Quebrada Coronel Díaz, tributary to río Yaguas, 2°51'13"S, 71°27'02" W, Province Maynas, Dept. Loreto, Peru. Holotype: MUSM 28000. Paratypes: FMNH 117263 (8); MNRJ 29404 (8, 3 c&s); MUSM 26961 (23), 27154 (27), 27155 (28); MZUSP 91411 (8). •Valid as Corydoras ortegai Britto, Lima & Hidalgo 2007 -- (Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma ortegai (Britto, Lima & Hidalgo 2007) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma ortegai (Britto, Lima & Hidalgo 2007). Callichthyidae: Corydoradinae. Distribution: South America: Putumayo River basin (Peru). Habitat: freshwater.

osteocarus, Corydoras Böhlke [J. E.] 1951:824 [Annals and Magazine of Natural History (Series 12) v. 4 (no. 44); ref. 12428] San Fernando de Atabapo, 4°03'N, 67°45'W, where Río Atabapo empties into Río Orinoco, Amazonas, Venezuela. Holotype: CAS-SU 16333. Paratypes: CAS 20563 (4), CAS-SU 16334 (3), USNM 157367 [ex CAS-SU 16334] (1). Type catalog: Böhlke 1953:45 [ref. 12291], Ferraris & Vari 1992:14 [ref. 19771], Ferraris 2007:121 [ref. 29155]. The specific epithet (bony head) is treated as an indeclinable noun. •Valid as Corydoras osteocarus Böhlke 1951 -- (Nijssen & Isbrücker 1980:211 [ref. 6910], Isbrücker & Nijssen 1992:13 [ref. 20559], Burgess 1989:366 [ref. 12860], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:121 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633], Espíndola et al. 2018:[18] [ref. 35899]). •Valid as Hoplisoma osteocarus (Böhlke 1951) -- (Dias et al. 2024:27 [ref. 41219] as osteocarum). Current status: Valid as Hoplisoma osteocarus (Böhlke 1951). Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin and coastal rivers of Suriname, Colombia, Suriname and Venezuela. Habitat: freshwater.

ourastigma, Corydoras Nijssen [H.] 1972:428, Fig. 8 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Rio Iquiri at road from River Branco village to Abuna, Rio Purus system, Acre, Brazil. Holotype: IRSNB 498. Paratypes: IRSNB 499 (orig. 1, now 0), MZUSP [ex IRSNB 499] (1), ZMA 110615 (1). Type catalog: Nijssen et al. 1982:48 [ref. 19236], Walschaerts 1987:19 [ref. 20755], Ferraris 2007:121 [ref. 29155]. •Valid as Corydoras ourastigma Nijssen 1972 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:121 [ref. 29155], Tencatt & Ohara 2016:[12] [ref. 34353], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras ourastigma Nijssen 1972. Callichthyidae: Corydoradinae. Distribution: South America: Purus River drainage, middle Amazon basin, Brazil. Habitat: freshwater.

oxyrhynchus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:42, Pl. 4 (fig. 3) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Gojo Creek, tributary of Saramacca River, 6 kilometers south of Posoegroenoe, Brokopondo, Suriname. Holotype: RMNH 25329. Paratypes: RMNH 25330 (1), ZMA 104640 (1). Type catalog: Nijssen et al. 1982:48-49 [ref. 19236], Ferraris 2007:121 [ref. 29155] •Valid as Corydoras oxyrhynchus Nijssen & Isbrücker 1967 -- (Nijssen & Isbrücker 1980:217 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:121 [ref. 29155], Taphorn et al. 2022:45 [ref. 41297], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras oxyrhynchus Nijssen & Isbrücker 1967. Callichthyidae: Corydoradinae. Distribution: South America: Saramacca River drainage, Irang River drainage (Guyana and Suriname). Habitat: freshwater.

paleatus, Callichthys Jenyns [L.] 1842:113 [The zoology of the voyage of H. M. S. Beagle; ref. 2344] Laguna del Potrero, Maldonado, Uruguay, 34°50'28"S, 55°08'43"W. Lectotype: BMNH 1917.7.14.18 [ex Cambridge Mus.]. Paralectotypes: BMNH 1917.7.14.19 and 19a [ex Cambridge Mus.] (2) South America. Type catalog: Ferraris 2007:122 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:204 [ref. 6910]. But Knaack 2007:23 [ref. 29220] regarded BMNH 1917.1.14.18 as not the lectotype, finding the lectotype to be lost; he selected BMNH 1917.7.14.19 as the neotype (following Art. 75). Knaack 2008:15 [ref. 29618] retracted his neotype designation and supported the lectotype designation by Nijssen & Isbrücker. Callichthys punctatus Valenciennes 1834 is the senior synonym of C. paleatus Jenyns 1842, but C. paleatus is a nomen protectum when in Corydoras due to secondary homonymy of C. punctatus (see Grant 2018:26 [ref. 36057]). Comments on type locality by Calvino 2020:60 [ref. 38040]. •Valid as Corydoras paleatus (Jenyns 1842) -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Malabarba 1989:147 [ref. 14217], Burgess 1989:366 [ref. 12860], Gómez & Chebez 1996:62 [ref. 23791], Haro et al. 1996:6 [ref. 25004], Sverlij et al. 1998:64 [ref. 27632], Britski et al. 1999:126 [ref. 24147], Britto et al. 2002:735 [ref. 26546], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], López et al. 2003:43 [ref. 27366], Axenrot & Kullander 2003:265 [ref. 27393], Britto & Lima 2003:89 [ref. 27314], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Menni 2004:82 [ref. 28131], Knaack 2007:23 [ref. 29220], Knaack 2007:23 [ref. 29220], Knaack 2007:36 [ref. 29221], Ferraris 2007:122 [ref. 29155], Calviño & Alonso 2010:200 [ref. 30829], Mabragaña et al. 2011:table S2 [ref. 31800], Tencatt et al. 2014:78 [ref. 33230], Tencatt et al. 2014:91 [ref. 33232], Fabiano et al. 2014:8 [ref. 33530], Litz & Koerber 2014:23 [ref. 33622], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:40 [ref. 35117], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[3] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], Bertaco et al. 2016:416 [ref. 34561], Koerber & Litz 2016:5 [ref. 35098], Nión et al. 2016:31 [ref. 35565], Koerber et al. 2017:6 [ref. 35083], Koerber et al. 2017:7 [ref. 35632], Grant 2018:26 [ref. 36057], Koerber et al. 2019:7 [ref. 36736], Calvino 2020:60 [ref. 38040], Koerber et al. 2020:5 [ref. 37480], Lima & Britto 2020:528 [ref. 37324], Koerber et al. 2021:6 [ref. 38894], Giora & Wingert 2023:62 [ref. 41026], Koerber et al. 2023:6 [ref. 40355], Loureiro et al. 2023:94 [ref. 40506]). •Valid as Hoplisoma paleatum (Jenyns 1842) -- (Dias et al. 2024:27 [ref. 41219] as paleatus). Current status: Valid as Hoplisoma paleatum (Jenyns 1842). Callichthyidae: Corydoradinae. Distribution: South America: lower Paraná River basin and coastal rivers (southern Brazil, Bolivia, Uruguay and Argentina). Habitat: freshwater.

panda, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1971:186, Fig. 2 [Beaufortia v. 18 (no. 239); ref. 7697] Aquas Amarillas, tributary of Río Pachitea, Río Ucayali system, Huanuco State, Peru. Holotype: BMNH 1969.7.15.8. Paratypes: BMNH 1969.7.15.9 (1), ZMA 110604 [ex BMNH 1969.7.15.10] (1). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras panda Nijssen & Isbrücker 1971 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:367 [ref. 12860], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Britto et al. 2007:294 [ref. 29283], Ferraris 2007:122 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma panda (Nijssen & Isbrücker 1971) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma panda (Nijssen & Isbrücker 1971). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon River basin, Peru and Ecuador. Habitat: freshwater.

pantanalensis, Corydoras Knaack [J.] 2001:59, Figs. [Aquaristik aktuell (Germany) 9-10/2001; ref. 26247] Pantanal, Departamento Santa Cruz, 16°06'525"S, 59°55'620"W, Bolivia. Holotype: MTD F 24774. Paratypes: CJRA-UTB Nr. 961a-e (5); MTD F 24775-80 (6); ZMA 123538-39 (3, 3); ZMB 33230-33 (4). Type catalog: Zarske 2003:24 [ref. 27474], Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras pantanalensis Knaack 2001 -- (Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis pantanalensis (Knaack 2001) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis pantanalensis (Knaack 2001). Callichthyidae: Corydoradinae. Distribution: South America: Cussis and Las Petas River drainages, Bolivia and Brazil. Habitat: freshwater.

paragua, Corydoras Knaack [J.] 2004:65, Figs. 6-12 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Paragua, northwestern bank, river mouth area, río Itenez system, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia, 13°31.842'S, 61°90.015'W. Holotype: MTD F 28468. Paratypes: CAS uncat. (2); CIRA-UTB 1081 (2); CJK uncat. (251); MTD F 28469 (1); ZMA 123.1000.734 (1), 123.1000.735 (1); ZMB 33530 (1), 33531 (1). Type catalog: Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras paragua Knaack 2004 -- (Ferraris 2007:122 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Hoplisoma paragua (Knaack 2004) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma paragua (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

parallelus, Corydoras Burgess [W. E.] 1993:154, Figs. [Tropical Fish Hobbyist v. 41 (no. 12) (issue no. 450); ref. 20758] Rio Içana, Rio Negro drainage, Brazil. Holotype: MZUSP 45716. Paratypes: USNM 326187 (16). Type catalog: Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras parallelus Burgess 1993 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:122 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Hoplisoma parallelum (Burgess 1993) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma parallelum (Burgess 1993). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

pastazensis, Corydoras Weitzman [S. H.] 1963:59, Fig. 1 [Proceedings of the Biological Society of Washington v. 76; ref. 5663] Chicherata, about 2°33'S, 76°40'W [? 2°22'S, 76°38'W], near mouth of Río Bobonaza, Pastaza Province, Ecuador. Holotype: USNM 177216. Paratypes: USNM 164464 (3). Type catalog: Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras pastazensis Weitzman 1963 -- (Ovchynnyk 1967:37 [ref. 37559], Nijssen & Isbrücker 1980:217 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:232 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras pastazensis Weitzman 1963. Callichthyidae: Corydoradinae. Distribution: South America: Pastaza and Tigre River drainages, western Amazon basin (Colombia, Ecuador and Peru). Habitat: freshwater.

paucerna, Corydoras Knaack [J.] 2004:57, Figs. 1-5 [Zoologische Abhandlungen; Staatliches Museum für Tierkunde in Dresden v. 54; ref. 27989] Río Paragua, río Itenez system, Provincia J.M. Velasco, Departamento Santa Cruz, Bolivia, 13°34.384'S, 62°03.067'W. Holotype: MTD F 28466. Paratypes: CAS 219131 (2); CIRA-UTB 1080 (2); CJK uncat. (135); MTD F 28467 (1); ZMA 123.1000.732 (2); ZMB 33528 (1), 33529 (1). Type catalog: Ferraris 2007:122 [ref. 29155]. •Valid as Corydoras paucerna Knaack 2004 -- (Ferraris 2007:122 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus paucerna (Knaack 2004). Callichthyidae: Corydoradinae. Distribution: South America: Itenez River drainage, western Amazon basin, Bolivia. Habitat: freshwater.

pauciradiatus, Corydoras Weitzman [S. H.] & Nijssen [H.] 1970:129, Figs. 5, 6e [Beaufortia v. 18 (no. 233); ref. 7481] Rio Araguaia near Aruana, 14°58'S, 51°04'W, Goias State, Brazil. Holotype: USNM 191625. Paratypes: USNM 204363 (1). Type catalog: Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:109 [ref. 29155] •Valid as Aspidoras pauciradiatus (Weitzman & Nijssen 1970) -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Lima & Britto 2001:1010 [ref. 25818] as cf. pauciradiatus, Isbrücker 2001:217 [ref. 26805], Britto et al. 2002:733 [ref. 26546], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Wosiacki et al. 2014:315 [ref. 33356], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227]). •Valid as Corydoras pauciradiatus Weitzman & Nijssen 1970 -- (Tencatt et al. 2022:7 [ref. 39729]). •Valid as Gastrodermus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus pauciradiatus (Weitzman & Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: upper Araguaia River basin, Brazil. Habitat: freshwater.

pavanelliae, Corydoras Tencatt [L. F. C.] & Ohara [W. M.] 2016:[8], Figs. 2c, 2d, 3b, 3d, 6 [Neotropical Ichthyology v. 14 (no. 1) e150063; ref. 34353] Mato Grosso State, Colniza Municipality, Guariba District, tributary to the rio Guariba, rio Aripuanã drainage, rio Madeira basin, Brazil, 9°06'47.4"S, 60°25'14.1"W. Holotype: MNRJ 43317. Paratypes: INPA, MCP, MZUSP, NUP, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:12 [ref. 39255]. •Valid as Corydoras pavanelliae Tencatt & Ohara 2016 -- (Ohara et al. 2016:550 [ref. 34772]). •Valid as Hoplisoma pavanelliae (Tencatt & Ohara 2016) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma pavanelliae (Tencatt & Ohara 2016). Callichthyidae: Corydoradinae. Distribution: South America: Rio Aripuanã drainage, rio Madeira basin (Brazil). Habitat: freshwater.

pectoralis, Callichthys Boulenger [G. A.] 1895:525 [Proceedings of the Zoological Society of London 1895 (pt 3); ref. 14576] Monte Sociedad, Chaco Dept., Paraguay. Lectotype: BMNH 1895.5.17.57. Paralectotypes: (several) BMNH 1895.5.17.58-61 (4). Type catalog: Ferraris 2007:128 [ref. 29155]. Lectotype selected by Knaack 2006:54 [ref. 30731]. •Valid as Hoplosternum pectorale (Boulenger 1895) -- (Burgess 1989:364 [ref. 12860], de Oliveira & de Moraes Junior 1997:2 [ref. 23461], Britski et al. 1999:125 [ref. 24147]). •Valid as Lepthoplosternum pectorale (Boulenger 1895) -- (Reis 1997:316 [ref. 22747], Reis 1998:353 [ref. 23849], Reis in Reis et al. 2003:305 [ref. 27061], López et al. 2003:43 [ref. 27366], Casciotta et al. 2003:132 [ref. 28130], Menni 2004:81 [ref. 28131], Reis & Kaefer 2005:724 [ref. 28481], Knaack 2006:49 [ref. 30731], Ferraris 2007:128 [ref. 29155], Zarucki et al. 2010:192 [ref. 34811], Litz & Koerber 2014:23 [ref. 33622], Sarmiento et al. 2014:190 [ref. 35004], Mirande & Koerber 2015:39 [ref. 35117], Bertaco et al. 2016:416 [ref. 34561], Koerber et al. 2017:56 [ref. 35267], Reis et al. 2020:465 [ref. 38364], Loureiro et al. 2023:92 [ref. 40506]). Current status: Valid as Lepthoplosternum pectorale (Boulenger 1895). Callichthyidae: Callichthyinae. Distribution: South America: Paraguay River basin (Argentina, Brazil, Bolivia, Paraguay and Uruguay). Habitat: freshwater.

personatus, Callichthys Ranzani [C.] 1841:62 [Nuovi annali delle scienze naturali e rendiconto dei lavori dell'Accademia della Scienze dell'Instituto di Bologna con appendice agraria. Bologna Anno III, Tomo V; ref. 24074] Brazil. Holotype (unique): MZUB 934. Type catalog: Ferraris 2007:129 [ref. 29155]. Also appeared in more detail in Ranzani 1842:322, Pl. 24 [ref. 18607]. •Valid as Hoplosternum personatum (Ranzani 1841) -- (Britski et al. 1999:125 [ref. 24147]). •Valid as Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155], DoNascimiento 2016:531 [ref. 34727]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

pestai, Corydoras Holly [M.] 1940:107 [Anzeiger der Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse v. 77 (no. 15); ref. 13059] Aquarium specimen (said to be from very small water-courses of the Amazon). Holotype: Münchner Tierpark A.G. 81/1938 (destroyed in WWII). Type catalog: Ferraris 2007:116 [ref. 29155], Bogutskaya et al. 2022:74 [ref. 39277]. •Status uncertain -- (Isbrücker 2001:232 [ref. 26805]). •Synonym of Corydoras elegans Steindachner 1876 -- (Nijssen & Isbrücker 1980:213 [ref. 6910], Reis in Reis et al. 2003:297 [ref. 27061], Ferraris 2007:116 [ref. 29155]). •Synonym of Gastrodermus elegans (Steindachner 1876). Current status: Synonym of Gastrodermus elegans (Steindachner 1876). Callichthyidae: Corydoradinae. Habitat: freshwater.

petracinii, Corydoras Calviño [P. A.] & Alonso [F.] 2010:204, Fig. 2 [Revista del Museo Argentino de Ciencias Naturales, n.s. v. 11 (no. 2) [for 2009]; ref. 30829] Small stream, 200 meters from its ending into the San Lorenzo River, 24°47'08"S, 65°28'10"W, Finca Las Costas, around Salta city, Argentina, elevation 1222 meters. Holotype: MACN 9233. Paratypes: MCNI 1381 (5). •Valid as Corydoras petracinii Calviño & Alonso 2010 -- (Koerber 2011:5 [ref. 31122], Koerber 2014:8 [ref. 33621], Mirande & Koerber 2015:40 [ref. 35117], Ohara et al. 2016:548 [ref. 34772]). •Valid as Hoplisoma petracinii (Calviño & Alonso 2010) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma petracinii (Calviño & Alonso 2010). Callichthyidae: Corydoradinae. Distribution: South America: San Lorenzo River basin, Argentina. Habitat: freshwater.

pictus, Callichthys Müller [J.] & Troschel [F. H.] 1849:630 [Reisen in Britisch-Guiana; ref. 3072] Guyana. Syntypes: ZMB 3151 (1). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], DoNascimiento 2016:531 [ref. 34727]). •Valid as Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], DoNascimiento et al. 2017:72 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773], Meza-Vargas et al. 2021:25 [ref. 39298], Taphorn et al. 2022:45 [ref. 41297]). Current status: Valid as Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Distribution: South America: east of the Andes in the Amazon, Orinoco and Essequibo river basins (Bolivia, Brazil, Colombia, Guyana, Peru and Venezuela). Habitat: freshwater.

pinheiroi, Corydoras Dinkelmeyer [J.] 1995:60, Fig. [Aquaristik aktuell (Germany) 3/1995; ref. 23145] Side stream of Rio Ribeiro, at Guajará-Mirim, Rondônia State, Brazil. Holotype: MZUSP 48099. Paratypes: ZMA 121269 (3); ZFMK 18499 (1), 18500 (1), 18540-42 (3). Type catalog: Ferraris 2007:122 [ref. 29155], Herder et al. 2010:120 [ref. 31087]. •Valid as Corydoras pinheiroi Dinkelmeyer 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:550 [ref. 34772]). •Valid as Brochis pinheiroi (Dinkelmeyer 1995) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis pinheiroi (Dinkelmeyer 1995). Callichthyidae: Corydoradinae. Distribution: South America: western Amazon River basin, Rondônia State, Brazil. Habitat: freshwater.

poecilus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:121, Fig. 13 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Creek upstream of village Porori, left bank of upper Rio Xingu, Mato Grosso State, Brazil. Holotype: IRSNB 560. Paratypes: USNM 191624 (1), ZMA 113597 (1). Type catalog: Nijssen et al. 1982:39 [ref. 19236], Walschaerts 1987:17 [ref. 20755], Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:109 [ref. 29155]. •Valid as Aspidoras poecilus Nijssen & Isbrücker 1976 -- (Burgess 1989:364 [ref. 12860], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:109 [ref. 29155], Leão et al. 2015:583 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:96 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras poecilus Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Distribution: South America: Araguaia, Tocantins, Tapajós and Xingu River basins, Brazil. Habitat: freshwater.

polystictus, Corydoras Regan [C. T.] 1912:216 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Upper Rio Paraguay, Descalvados, 16°45'S, 57°40'W, Mato Grosso State, Brazil. Lectotype: BMNH 1895.5.17.62. Paralectotypes: BMNH 1895.5.17.63 (1). Type catalog: Ferraris 2007:123 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:197 [ref. 6910]. •Valid as Corydoras polystictus Regan 1912 -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker & Nijssen 1992:13 [ref. 20559], Britski et al. 1999:126 [ref. 24147], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], López et al. 2003:43 [ref. 27366], Menni 2004:82 [ref. 28131], Ferraris 2007:123 [ref. 29155], Calviño & Alonso 2010:200 [ref. 30829], Espíndola et al. 2014:26 [ref. 33269], Sarmiento et al. 2014:190 [ref. 35004], Cardoso et al. 2015:1 [ref. 35092], Mirande & Koerber 2015:40 [ref. 35117], Tencatt & Ohara 2016:[12] [ref. 34353], Ottoni et al. 2016:133 [ref. 34756], Koerber et al. 2017:58 [ref. 35267]). •Valid as Hoplisoma polystictum (Regan 1912) -- (Dias et al. 2024:27 [ref. 41219], Koerber 2024:5 [ref. 41228]). Current status: Valid as Hoplisoma polystictum (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: Paraguay River basin (Argentina, Brazil, Paraguay and Bolivia). Habitat: freshwater.

potaroensis, Corydoras Myers [G. S.] 1927:126 [Bulletin of the Museum of Comparative Zoology v. 68 (no. 3); ref. 3096] Creek below Potaro Landing (5°20'N, 59°05'W), Potaro River, Essequibo, Guyana. Lectotype: CAS 24754 [ex IU 11984]. Paralectotypes: CAS 24755 [ex IU 11984] (3), FMNH 53127 [ex CM 1561], MCZ 31576 (1). Type catalog: Ferraris 2007:123 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:208 [ref. 6910], Ferraris 2007:123 [ref. 29155]. •Valid as Corydoras potaroensis Myers 1927 -- (Nijssen & Isbrücker 1980:208 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:123 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Taphorn et al. 2022:45 [ref. 41297]). •Valid as Hoplisoma potaroense (Myers 1927) -- (Dias et al. 2024:27 [ref. 41219] as potaroensis). Current status: Valid as Hoplisoma potaroense (Myers 1927). Callichthyidae: Corydoradinae. Distribution: South America: Potaro River basin (Guyana) endemic. Habitat: freshwater.

prionotos, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1980:5, Figs. 6-7 [Beaufortia v. 30 (no. 1); ref. 8681] Linhares, 19°22'S, 40°04'W, Lagoa Juparaná, Rio Doce system, Espírito Santo State, Brazil. Holotype: MNRJ 10537. Paratypes: BMNH 1905.6.9.7 (1); CAS 16016 [ex IU 10796] (1); FMNH 54882 (1); MNRJ 5068 (1), 5219 (58), 5367 (1), 6183 (1), 9713 (12), 10538-44 (2, 1, 2, 3, 3, 1, 2); NMW 18993 (1), 46786 (3); CAS-SU 47856 (5); ZMA 110476 (3), 115323 (5). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris 2007:130 [ref. 29155]. •Valid as Corydoras prionotos Nijssen & Isbrücker 1980 -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:41 [ref. 26260], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Knaack 2007:43 [ref. 29221]). •Valid as Scleromystax prionotos (Nijssen & Isbrücker 1980) -- (Britto 2003:147 [ref. 27338], Britto & Reis 2005:481 [ref. 28458], Knaack 2007:43 [ref. 29221], Ferraris 2007:130 [ref. 29155], Britto et al. 2016:[9] [ref. 34806], Silva et al. 2020:10 [ref. 37809], Dias et al. 2024:24 [ref. 41219], Vieira-Guimarães et al. 2024:44 [ref. 41258]). Current status: Valid as Scleromystax prionotos (Nijssen & Isbrücker 1980). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers (eastern Brazil). Habitat: freshwater.

psamathos, Corydoras Tencatt [L. F. C.], Ohara [W. M.], Sousa [L. M.] & Britto [M. R.] 2022:24, Figs. 11-14 [Neotropical Ichthyology v. 20 (no. 3): e220070; ref. 39741] Igarapé Santa Júlia, a tributary to the Rio Jamanxim, Tapajós basin, Novo Progresso Municipality, Pará State, Brazil, 06°45'38"S, 55°28'44"W. Holotype: MNRJ 53289. Paratypes: CITL, INPA, MZUSP, NUP. •Valid as Hoplisoma psamathos (Tencatt, Ohara, Sousa & Britto 2022). Current status: Valid as Hoplisoma psamathos (Tencatt, Ohara, Sousa & Britto 2022). Callichthyidae: Corydoradinae. Distribution: South America: Jamanxim River drainage, Tapajós basin, Brazil. Habitat: freshwater.

psammatides, Aspidoras Britto [M. R.], Lima [F. C. T.] & Santos [A. C. A.] 2005:474, Figs. 1-5 [Neotropical Ichthyology v. 3 (no. 4); ref. 28459] Municipio de Lençóis, rio Caldeirão, 12°39'33"S, 41°22'12"W, Bahia State, Brazil. Holotype: MNRJ 28407. Paratypes: MNRJ 21269 (51), 21270 (26, 2 c&s), 21708 (7), 21709 (50, 2 c&s), 21710 (18), 21711 (47), 21712 (1); MZUSP 67194 (20), 67195 (20). Type catalog: Ferraris 2007:110 [ref. 29155]. •Valid as Aspidoras psammatides Britto, Lima & Santos 2005 -- (Ferraris 2007:110 [ref. 29155], Wosiacki et al. 2014:315 [ref. 33356], Leão et al. 2015:585 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Silva et al. 2020:10 [ref. 37809], Tencatt et al. 2022:113 [ref. 39729], Dias et al. 2024:24 [ref. 41219], Vieira-Guimarães et al. 2024:43 [ref. 41258]). Current status: Valid as Aspidoras psammatides Britto, Lima & Santos 2005. Callichthyidae: Corydoradinae. Distribution: South America: upper Paraguaçu River drainage, Bahia State (Brazil). Habitat: freshwater.

pulcher, Corydoras Isbrücker [I. J. H.] & Nijssen [H.] 1973:2, Figs. 1-2 [Beaufortia v. 21 (no. 272); ref. 7567] Rio Purus, north of Lábrea, 7°20'S, 64°46'W, River Amazonas system, Amazonas State, Brazil. Holotype: SMF 9231. Paratype: ZMA 112648 (1). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris 2007:123 [ref. 29155]. •Valid as Corydoras pulcher Isbrücker & Nijssen 1973 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:301 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Ferraris 2007:123 [ref. 29155]). •Valid as Brochis pulcher (Isbrücker & Nijssen 1973) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis pulcher (Isbrücker & Nijssen 1973). Callichthyidae: Corydoradinae. Distribution: South America: Purus River drainage, Amazon basin, Brazil. Habitat: freshwater.

punctata, Loricaria Suckow [G. A.] 1799:656 [Naturgeschichte der Thiere v. 4, pt. 1; ref. 18858] New combination for Cataphractus punctatus Bloch 1794; not an original description. •In the synonymy of Hoplisoma punctatum (Bloch 1794). Current status: Synonym of Hoplisoma punctatum (Bloch 1794). Callichthyidae: Corydoradinae.

punctatum, Hoplosternum Meek [S. E.] & Hildebrand [S. F.] 1916:264, Pls. 14-15 [Field Museum of Natural History, Publications, Zoölogical Series v. 10 (no. 15); ref. 2962] Río Marte Arnade, 6 miles east of Panama City, Panama. Holotype: FMNH 8943. Paratypes: FMNH 59534 (1), USNM 78378 (2). Type catalog: Ibarra & Stewart 1987:47 [ref. 12367], Ferraris & Vari 1992:15 [ref. 19771] stating probable paratypes, original description specifically cited only type (=holotype), Ferraris 2007:128 [ref. 29155]. •Valid as Hoplosternum punctatum Meek & Hildebrand 1916 -- (Reis 1997:307 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], DoNascimiento et al. 2017:72 [ref. 35633]). Current status: Valid as Hoplosternum punctatum Meek & Hildebrand 1916. Callichthyidae: Callichthyinae. Distribution: Pacific coastal drainages of Panama and in the Atrato River basin: Colombia and Panama. Habitat: freshwater.

punctatus, Callichthis Valenciennes [A.] 1834:Pl. 5 (fig. 1) [Voyage dans l'Amérique méridionale; ref. 20720] Probably around Montevideo (Valenciennes 1840). Holotype not preserved. Genus should have been Callichthys (see Grant 2018:26 [ref. 36057]). Secondary homonym of Cataphractus punctatus Bloch 1794 when in Corydoras. Name available from plate, description in Valenciennes 1847:8 [ref. 5010] as Callichthys punctatus. See also Valenciennes in Cuvier & Valenciennes 1840:318 [ref. 1008]. Holotype is the specimen illustrated on Pl. 5, which was published in 1834. •Synonym of Corydoras paleatus (Jenyns 1842) or Corydoras geoffroy Lacepède 1803 -- (Isbrücker 1999:38 [ref. 24040]). •Senior synonym of Corydoras paleatus (Jenyns 1842) and nomen oblitum -- (Grant 2018:26 [ref. 36057]). •Synonym of Hoplisoma paleatum (Jenyns 1842). Nomen Oblitum. Current status: Synonym of Hoplisoma paleatum (Jenyns 1842). Callichthyidae: Callichthyinae. Habitat: freshwater.

punctatus, Cataphractus Bloch [M. E.] 1794:90, Pl. 377 (fig. 2) [Naturgeschichte der ausländischen Fische v. 8; ref. 463] Compagnie Creek, Suriname River system, Brokopondo, Suriname [rivers in Suriname]. Lectotype: ZMB 3149. Paralectotypes: ZMB 22228 [ex ZMB 3149] (1). Type catalog: Paepke 1999:52 [ref. 24282], Ferraris 2007:123 [ref. 29155]. On p. 72 of Bloch's Ichthyologie, v. 11 [ref. 21381]. Lectotype selected by Nijssen & Isbrücker 1975:63 [ref. 22250] after location of syntypes and following neotype designation. Placed on Official List (Opinion 1169). •Valid as Corydoras punctatus (Bloch 1794) -- (Nijssen & Isbrücker 1980:193 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Le Bail et al. 2000:206 [ref. 24549], Isbrücker 2000:18 [ref. 26715], Isbrücker 2001:233 [ref. 26805], Isbrücker 2002:69 [ref. 26658], Isbrücker 2002:107 [ref. 26659], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:123 [ref. 29155]). •Valid as Hoplisoma punctatum (Bloch 1794) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma punctatum (Bloch 1794). Callichthyidae: Corydoradinae. Distribution: South America: Suriname River basin, Suriname and Iracoubo River basin, French Guiana. Habitat: freshwater.

punctatus, Corydoras Hyrtl [C. J.] 1859:17 [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 16; ref. 2291] No locality given. No types known. Appeared in "Osteologische Tabelle der Siluroiden." Callichthyidae: Corydoradinae. Habitat: freshwater.

pygmaeus, Corydoras Knaack [J.] 1966:168, 2 figs. [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 19 (no. 6); ref. 19253] Near Calama, 8°05'S, 62°52'W, along Rio Madeira near mouth of Rio Jipiraná (= River Machado), Rondônia State, Brazil. Holotype: ZMB 21620. Paratype: ZMB 21621 (1). Type catalog: Ferraris 2007:123 [ref. 29155]. Appeared first as above, then in Knaack 1966:364 [ref. 19252]. •Valid as Corydoras pygmaeus Knaack 1966 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:233 [ref. 26805], Britto et al. 2002:733 [ref. 26546], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:123 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Ohara et al. 2016:550 [ref. 34772], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Grant 2019:7 [ref. 37238], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Gastrodermus pygmaeus -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Gastrodermus pygmaeus (Knaack 1966). Callichthyidae: Corydoradinae. Distribution: South America: Amazon basin (Brazil, Colombia, Ecuador and Peru). Habitat: freshwater.

quadricostatus, Silurus Larrañaga [D. A.] 1923:376 [Escritos de Don Dámaso Antonio Larrañaga v. 2; ref. 22561] Uruguay. No types known. Type catalog: Ferraris 2007:122 [ref. 29155]. Corresponds to Silurus 7-radiatus on p. 385. Appeared as Silurus 7-radiatus vel quadricostatum in Devincenzi 1925: 322, 307 [ref. 20322]; Devincenzi treated as a synonym of Corydoras paleatus (Jenyns 1842). •Doubtful synonym of Corydoras paleatus (Jenyns 1842) -- (Isbrücker 2001:232 [ref. 26805]). •Synonym of Corydoras paleatus (Jenyns 1842) -- (Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:122 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117]). •Not a synonym of Corydoras paleatus (Jenyns 1842) -- (Tencatt et al. 2016:[10] [ref. 34388]). •Nomen dubium in genus Corydoras – (Grant 2018:28 [ref. 36057]). Nomen Dubium. Callichthyidae: Corydoradinae. Habitat: freshwater.

rabauti, Corydoras LaMonte [F. R.] 1941:5 [Zoologica, Scientific Contributions of the New York Zoological Society v. 26 (pt 1, no. 2); ref. 13223] A tributary of Amazon River, 7 days by river boat from manaus, 3°06'S, 60°00'W, Amazonas, Brazil. Holotype: AMNH 15644. Paratypes: AMNH 15645 (1), 15646 (orig. 7, now 4), ?21773SW (1, c&s); USNM 16272 [ex AMNH 15646] (1). Type catalog: Ferraris 2007:123 [ref. 29155]. •Valid as Corydoras rabauti LaMonte 1941 -- (Nijssen & Isbrücker 1980:210 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:233 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:123 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Osteogaster rabauti (LaMonte 1941) -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Osteogaster rabauti (LaMonte 1941). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon, Solimões and Negro River basins (Brazil, Colombia and Peru). Habitat: freshwater.

raimundi, Corydoras Steindachner [F.] 1907:84 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 44 (no. 6) (for 28 Feb. 1907); ref. 20499] At mouth of brook emptying into Rio Parnahyba near Victoria [Alto Parnaíba], 9°08'S, 45°56'W, Maranhão State, Brazil. Lectotype: NMW 61110 [ex NMW 46794]. Paralectotypes: (several) RMNH 7692 (1); NMW 46794 (?), 46795 (38); ZMA 110480 (9). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris 2007:110 [ref. 29155]. Spelled raymundi in literature. Lectotype selected by Nijssen & Isbrücker 1976:111 [ref. 7077]. •Valid as Aspidoras raimundi (Steindachner 1907) -- (Burgess 1989:364 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:110 [ref. 29155], Ramos et al. 2014:4 [ref. 35321], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Koerber et al. 2022:47 [ref. 39235], Tencatt et al. 2022:121 [ref. 39729], Vieira et al. 2023:20 [ref. 40759] as cf. raimundi, Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras raimundi (Steindachner 1907). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in north and northeast Brazil. Habitat: freshwater.

reisi, Scleromystax Britto [M. R.], Fukakusa [C. K.] & Malabarba [L. R.] 2016:[2], Figs. 1, 2a, 3, 4-7 [Neotropical Ichthyology v. 14 (no. 3) e150158; ref. 34806] Gravataí, arroio Demétrio, Morungava, Rio Grande do Sul, Brazil, 29°47'26"S, 50°51'51.55"W. Holotype: MCP 49070. Paratypes: MCP, MNRJ, UFRGS. •Valid as Scleromystax reisi Britto, Fukakusa & Malabarba 2016 -- (Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax reisi Britto, Fukakusa & Malabarba 2016. Callichthyidae: Corydoradinae. Distribution: South America: Laguna dos Patos drainage, Rio Grande do Sul, Brazil. Habitat: freshwater.

reticulatus, Corydoras Fraser-Brunner [A.] 1938:208, Fig. [The Aquarist and Pondkeeper v. 8 (no. 7); ref. 19250] Amazon River at Monte Alegre, 2°00'S, 54°04'W, Pará State, Brazil. Neotype: BMNH 1926.10.27.333. Type catalog: Ferraris 2007:123 [ref. 29155]. Original two syntypes were lost, Fraser-Brunner redescribed species in 1947:244 [ref. 13085] with a "holotype" which Weitzman 1960 [ref. 9613] designated as neotype; see Nijssen & Isbrücker 1980:197 [ref. 6910]. •Valid as Corydoras reticulatus Fraser-Brunner 1938 -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:123 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis reticulatus (Fraser-Brunner 1938) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis reticulatus (Fraser-Brunner 1938). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru). Habitat: freshwater.

reynoldsi, Corydoras Myers [G. S.] & Weitzman [S. H.] 1960:105, Figs. 2-3 [Stanford Ichthyological Bulletin v. 7 (no. 4); ref. 9584] Tributary to Río Orteguasa (ca. 0°45'N, 75°15'W), Tres Esquinas, Caquetà Province, eastern Colombia. Holotype: CAS-SU 52349 (Fig. 2 lists SU 50702 as holotype). Paratypes: CAS-SU 50702 (7), ZMA 111424 (1). Type catalog: Nijssen et al. 1982:49 [ref. 19236], Ferraris 2007:123 [ref. 29155]. •Valid as Corydoras reynoldsi Myers & Weitzman 1960 -- (Nijssen & Isbrücker 1980:211 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Britto & Lima 2003:88 [ref. 27314], Britto et al. 2007:294 [ref. 29283], Ferraris 2007:123 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633]). •Valid as Hoplisoma reynoldsi (Myers & Weitzman 1960) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma reynoldsi (Myers & Weitzman 1960). Callichthyidae: Corydoradinae. Distribution: South America: upper Caquetá River basin, Colombia. Habitat: freshwater.

rikbaktsa, Corydoras Lima [F. C. T.] & Britto [M. R.] 2020:519, Figs. 1-6 [Zootaxa 4742 (no. 3); ref. 37324] Rio Juininha, tributary of the Rio Juruena, road BR-174, Mato Grosso, Brazil, 11°32'12"S, 58°51'08"W. Holotype: MZUSP 125013. Paratypes: ANSP, CAS, MNRJ, MZUSP, ZUEC. •Valid as Corydoras rikbaktsa Lima & Britto 2020 -- (Tencatt et al. 2022:34 [ref. 39741]). •Valid as Hoplisoma rikbaktsa (Lima & Britto 2020). Current status: Valid as Hoplisoma rikbaktsa (Lima & Britto 2020). Callichthyidae: Corydoradinae. Distribution: South America: Rio Juruena drainage, Tapajós River basin, Mato Grosso, Brazil. Habitat: freshwater.

robineae, Corydoras Burgess [W. E.] 1983:42, Figs. [Tropical Fish Hobbyist v. 31 (no. 9); ref. 8365] Rio Aiuana, southern tributary of the middle Rio Negro, Amazonas, Brazil. Holotype: MZUSP 27175. Paratypes: ZMA (3), MZUSP (2), USNM 257869 (3). Type catalog: Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras robineae Burgess 1983 -- (Burgess 1989:367 [ref. 12860], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Shimabukuro-Dias et al. 2004:141 [ref. 27796] as robinae, Ferraris 2007:124 [ref. 29155], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388]). •Valid as Brochis robineae (Burgess 1983) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis robineae (Burgess 1983). Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

robustus, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1980:499, Fig. 3 [Netherlands Journal of Zoology v. 30 (no. 3); ref. 8680] Creek into River Ipixuna, Rio Purus system, 7°31'S, 63°16'W, 30 kilometers west of Humaitá, Amazonas, Brazil. Holotype: ZMA 115179. Type catalog: Nijssen et al. 1982:49-50 [ref. 19236], Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras robustus Nijssen & Isbrücker 1980 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155]). •Valid as Brochis robustus (Nijssen & Isbrücker 1980) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis robustus (Nijssen & Isbrücker 1980). Callichthyidae: Corydoradinae. Distribution: South America: Purus River drainage, middle Amazon River basin, Brazil. Habitat: freshwater.

rochai, Aspidoras Ihering [R. von] 1907:30 [31] [Notas preliminares; editadas pela redaccão da Revista do Museu Paulista v. 1 (fasc. 1); ref. 2294] Guaramiranga, Ceará State, Brazil. Lectotype: MZUSP [ex DZSASP] 2195. Paralectotypes: MZUSP [ex DZSASP] 2195 (1). Type catalog: Ferraris 2007:110 [ref. 29155]. Portuguese on p. 31. Lectotype selected by Britski 1969:206 [ref. 12401]. •Valid as Aspidoras rochai Ihering 1907 -- (Burgess 1989:365 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:110 [ref. 29155], Wosiacki et al. 2014:315 [ref. 33356], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:137 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras rochai Ihering 1907. Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in Ceará, Brazil. Habitat: freshwater.

salmacis, Scleromystax Britto [M. R.] & Reis [R. E.] 2005:482, Figs. 1-2 [Neotropical Ichthyology v. 3 (no. 4); ref. 28458] Arroio Molha Coco in Rosa, nearly 5.5 kilometers northwest of Praia Grande, 29°10'14"S, 49°58'53"W, Praia Grande, Santa Catarina State, Brazil. Holotype: MCP 38388. Paratypes: MCP 17801 (2), 23624 (1), 29299 (4, 1 c&s); UFRJ 140 (2). Plus non-type material. Type catalog: Ferraris 2007:130 [ref. 29155]. •Valid as Scleromystax salmacis Britto & Reis 2005 -- (Ferraris 2007:130 [ref. 29155], Bertaco et al. 2016:416 [ref. 34561], Britto et al. 2016:[9] [ref. 34806], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Scleromystax salmacis Britto & Reis 2005. Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in southern Santa Catarina State, Brazil. Habitat: freshwater.

sanchesi, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:43, Pl. 5 (fig. 2) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Gojo Creek above Posoegroenoe, tributary of the Saramacca River, Brokopondo, Suriname. Holotype: RMNH 25319. Paratypes: RMNH 25320 (12), ZMA 104630 (5). Type catalog: Nijssen et al. 1982:50 [ref. 19236], Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras sanchesi Nijssen & Isbrücker 1967 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:43 [ref. 23454], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155]). •Valid as Hoplisoma sanchesi (Nijssen & Isbrücker 1967) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma sanchesi (Nijssen & Isbrücker 1967). Callichthyidae: Corydoradinae. Distribution: South America: Saramacca River drainage, Suriname. Habitat: freshwater.

saramaccensis, Corydoras Nijssen [H.] 1970:38, Fig. 21 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at right bank of Kleine Saramacca River, 11 kilometers east-southeast from junction with Saramacca River, Brokopondo, Suriname. Holotype: ZMA 106018. Paratypes: ZMA 105563 (8), 105650 (1). Type catalog: Nijssen et al. 1982:50 [ref. 19236], Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras saramaccensis Nijssen 1970 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:45 [ref. 23454] as sarammaccensis, Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155], Dias et al. 2024:23 [ref. 41219], Tencatt et al. 2024:21 [ref. 41298]). Current status: Valid as Corydoras saramaccensis Nijssen 1970. Callichthyidae: Corydoradinae. Distribution: South America: Saramacca River drainage, Suriname. Habitat: freshwater.

sarareensis, Corydoras Dinkelmeyer [J.] 1995:61, Fig. [Aquaristik aktuell (Germany) 3/1995; ref. 23145] Rio Sararé, right side branch of Rio Guaporé, Mato Grosso State, Brazil. Holotype: MZUSP 48100. Paratypes: ZMA 121268 (4), ZFMK 18504-06 (3). Type catalog: Ferraris 2007:124 [ref. 29155], Herder et al. 2010:120 [ref. 31087]. •Valid as Corydoras sarareensis Dinkelmeyer 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:234 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ohara et al. 2016:550 [ref. 34772], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras sarareensis Dinkelmeyer 1995. Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

schreineri, Hoplosternum Miranda Ribeiro [A. de] 1911:150, Pl. 35 (fig. 3) [Arquivos do Museu Nacional de Rio de Janeiro v. 16; ref. 3716] Amazonas, Brazil. Lectotype: MNRJ 1051A. Paralectotypes: MNRJ 1051 (1). Type catalog: Miranda Ribeiro 1955:395-396 [ref. 12732], Miranda Ribeiro 1959:7 [ref. 10392] as cotypes, Ferraris 2007:128 [ref. 29155]. Illustration is on Pl. 35, not 36 as indicated in text. Lectotype selected by Miranda Ribeiro 1953:396 [ref. 12732] [but perhaps specimen not isolated]. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

schultzei, Corydoras Holly [M.] 1940:111 [Anzeiger der Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Klasse v. 77 (no. 15); ref. 13059] Aquarium specimen (said to be from very small water-courses of the Amazon). Syntypes: Münchner Tierpark A.G. 80/1938 (4) (lost in WWII). Type catalog: Ferraris 2007:112 [ref. 29155], Bogutskaya et al. 2022:74 [ref. 39277]. •Synonym of Corydoras aeneus (Gill 1858) -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:112 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:57 [ref. 35267]). •Possibly valid as Corydoras schultzei Holly 1940 -- (Tencatt et al. 2023:21 [ref. 40180]). •Possibly valid as Osteogaster schultzei (Holly 1940). Current status: Uncertain as Osteogaster schultzei (Holly 1940). Callichthyidae: Corydoradinae. Distribution: South America: lower Amazon basin, Brazil [if valid]. Habitat: freshwater.

schwartzi, Corydoras Rössel [F.] 1963:359, Figs. 1-2 [Senckenbergiana Biologica v. 44 (no. 5); ref. 19251] Mouth of Rio Purus, Amazonas, Brazil. Holotype: SMF 6425. Paratypes: SMF 6426-36 (11). Type catalog: Ferraris 2007:124 [ref. 29155]. Also appeared in Rössel 1966:7 [ref. 9060]. •Valid as Corydoras schwartzi Rössel 1963 -- (Nijssen & Isbrücker 1980:200 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:44 [ref. 23454], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155], Ottoni et al. 2016:133 [ref. 34756]). •Valid as Hoplisoma schwartzi (Rössel 1963) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma schwartzi (Rössel 1963). Callichthyidae: Corydoradinae. Distribution: South America: Purus River drainage, middle Amazon basin, Brazil. Habitat: freshwater.

semiaquilus, Corydoras Weitzman [S. H.] 1964:121, Figs. 5-6 [Proceedings of the United States National Museum v. 116 (no. 3498); ref. 3719] Igarapé Preto, tributary upper Rio Salimões, Amazonas, Brazil. Holotype: CAS-SU 55939. Paratypes: SMF 5349 (1), USNM 196170 (1). Type catalog: Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras semiaquilus Weitzman 1964 -- (Nijssen & Isbrücker 1980:217 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras semiaquilus Weitzman 1964. Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru). Habitat: freshwater.

semiscutatus, Corydoras Cope [E. D.] 1872:280, Pl. 6 (figs. 1a-b) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributaries of Río Ambyiacu[ Rio Ampiyacu], Peru. Holotype (unique): ANSP 8289. Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:125 [ref. 29155]. •Synonym of Brochis coeruleus Cope 1872 -- (Isbrücker 2001:218 [ref. 26805]). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:159 [ref. 22239], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

septemradiatus, Silurus Larrañaga [D. A.] 1923:385 [Escritos de Don Dámaso Antonio Larrañaga v. 2; ref. 22561] Uruguay. Originally as Silurus 7-radiatus; corresponds to Silurus quadricostatus on p. 376. Appeared as Silurus 7-radiatus vel quadricostatum in Devincenzi 1925: 322, 307 [ref. 20322]; Devincenzi treated as a synonym of Corydoras paleatus (Jenyns 1842). •Doubtful synonym of Corydoras paleatus (Jenyns 1842) -- (Isbrücker 2001:232 [ref. 26805]). •Synonym of Corydoras paleatus (Jenyns 1842) -- (Reis in Reis et al. 2003:301 [ref. 27061], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117]). •Not a synonym of Corydoras paleatus (Jenyns 1842) -- (Tencatt et al. 2016:[10] [ref. 34388]). •Nomen dubium in genus Corydoras – (Grant 2018:28 [ref. 36057]). Nomen Dubium. Callichthyidae: Corydoradinae. Habitat: freshwater.

septentrionalis, Corydoras Gosline [W. A.] 1940:16 [Stanford Ichthyological Bulletin v. 2 (no. 1); ref. 6489] Río Piña, 6 kilometers north of Maturín, 9°45'N, 63°10'W, River Guarapiché system, Monagas, Venezuela. Holotype: CAS-SU 35055. Paratypes: CAS-SU 35056 (14, now 13), 35057 (1), 35058 (6, now 5), 35059 (1); USNM 130634 [ex CAS-SU 35056] (1); ZMA 111423-24 [ex SU] (1, 1). Type catalog: Böhlke 1953:45 [ref. 12291], Nijssen et al. 1982:50 [ref. 19236], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras septentrionalis Gosline 1940 -- (Nijssen & Isbrücker 1980:216 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Ferraris 2007:124 [ref. 29155], Tencatt et al. 2016:[18] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Urbano-Bonilla et al. 2018:77 [ref. 35773], Taphorn et al. 2022:45 [ref. 41297], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras septentrionalis Gosline 1940. Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin (Colombia, Guyana and Venezuela). Habitat: freshwater.

serralabium, Callichthys Lehmann A. [P.] & Reis [R. E.] 2004:339, Figs. 1, 2B, 3A [Copeia 2004 (no. 2); ref. 27654] Laguna Tonina, 1 kilometer upstream from La Esmeralda, upper Río Orinoco, 3°08'00"N, 65°32'00"W, La Esmeralda, Estado amazonas, Venezuela. Holotype: MBUCV-V 30980. Paratypes: AMNH 9613 (2), 74817 (1); ANSP 162690 (16); MCP 30693 (5); MHNUC 300 (1); MZUSP 64365 (1), 64367 (1); USNM 268859 (1). Type catalog: Ferraris 2007:111 [ref. 29155]. •Valid as Callichthys serralabium Lehmann A. & Reis 2004 -- (Ferraris 2007:111 [ref. 29155], Bogotá-Gregory et al. 2020:1400 [ref. 37878]). Current status: Valid as Callichthys serralabium Lehmann A. & Reis 2004. Callichthyidae: Callichthyinae. Distribution: South America: upper Orinoco and upper Negro River basins (southern Venezuela, Colombia and northern Brazil). Habitat: freshwater.

serratus, Corydoras Sands [D. D.] 1995:14, Fig. 7 [Freshwater and Marine Aquarium v. 18 (no. 7); ref. 22671] Rio Poranga, 8 kilometers north of the Nobua oba, where the two streams join a small tributary of the upper River Negro, Brazil. Holotype (unique): LIVCM 1994.4.38. Type catalog: Ferraris 2007:124 [ref. 29155]. •Valid as Corydoras serratus Sands 1995 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:302 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:124 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras serratus Sands 1995. Callichthyidae: Corydoradinae. Distribution: South America: upper Negro River basin, Brazil. Habitat: freshwater.

seussi, Corydoras Dinkelmeyer [J.] 1996:25 [Aquaristik aktuell (Germany) 2/1996; ref. 23146] Small side stream of Rio Pacas-Novos, side branch of Rio Mamoré, near Guajar-Mirim, Rondôndia State, Brazil. Holotype: MZUSP 49322. Paratypes: MZUSP 49323 (10), ZFMK 18628-53 (26), ZMA 121570 (10). Type catalog: Ferraris 2007:124 [ref. 29155], Herder et al. 2010:121 [ref. 31087]. •Valid as Corydoras seussi Dinkelmeyer 1996 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:124 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[18] [ref. 34388], Ohara et al. 2016:550 [ref. 34772]). •Valid as Brochis seussi (Dinkelmeyer 1996) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis seussi (Dinkelmeyer 1996). Callichthyidae: Corydoradinae. Distribution: South America: Mamoré River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

shirui, Hoplosternum Fowler [H. W.] 1940:232, Figs. 18-20 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 91 (for 1939); ref. 1432] Ucayali River basin, Contamana, Peru. Holotype: ANSP 68648. Paratypes: ANSP 68649 (1). Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:128 [ref. 29155]. •Valid as Hoplosternum shirui Fowler 1940 -- (Ortega & Vari 1986:16 [ref. 9708]). •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:303 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

similis, Corydoras Hieronimus [H.] 1991:39, Fig. 1 [Zeitschrift für Fischkunde v. 1 (no. 1); ref. 20044] Tributary of Rio Madeira, vicinity of city of Ariqumes, Rondonia State, Brazil. Holotype: ZFMK 16400. Paratypes: ZFMK 16401-02 (1, 1), uncat. (2); ZMA (1). Type catalog: Ferraris 2007:124 [ref. 29155], Herder et al. 2010:121 [ref. 31087]. •Valid as Corydoras similis Hieronimus 1991 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:124 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[18] [ref. 34388]). •Valid as Hoplisoma simile (Hieronimus 1991) -- (Dias et al. 2024:27 [ref. 41219] as similis). Current status: Valid as Hoplisoma simile (Hieronimus 1991). Callichthyidae: Corydoradinae. Distribution: South America: Madeira River basin, Brazil. Habitat: freshwater.

simulatus, Corydoras Weitzman [S. H.] & Nijssen [H.] 1970:126, Figs. 4, 6d [Beaufortia v. 18 (no. 233); ref. 7481] Río Ocoá near Puerto López, 4°06'N, 72°57'W, River Meta system, Meta, Colombia. Holotype: USNM 197615. Paratypes: USNM 197616 (4), 197667 (1); ZMA 110384 (2). Type catalog: Nijssen et al. 1982:50 [ref. 19236], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:125 [ref. 29155]. •Valid as Corydoras simulatus Weitzman & Nijssen 1970 -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:124 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras simulatus Weitzman & Nijssen 1970. Callichthyidae: Corydoradinae. Distribution: South America: upper Meta River drainage, Colombia. Habitat: freshwater.

sipaliwini, Corydoras melanistius Hoedeman [J. J.] 1965:137, Figs. 84 (a, b, c) [Elseviers pocketboek voor de aquariumliefhebber; ref. 19660] •Valid as Corydoras sipaliwini Nijssen & Isbrücker 1965 -- (Taphorn et al. 2022:45 [ref. 41297]). •Name only, not available -- (Nijssen & Isbrücker 1979:133 [ref. 19254], Isbrücker 2000:39 [ref. 25151]). •In genus Hoplisoma. Nomen Nudum. Callichthyidae: Corydoradinae. Distribution: South America: Guyana, Suriname. Habitat: freshwater.

sipaliwini, Corydoras punctatus Hoedeman [J. J.] 1965:87, Figs. 46 (1, 2, 3) [Elseviers pocketboek voor de aquariumliefhebber; ref. 19660] Sipaliwini River at Paru Savannah, Suriname. Lectotype: ZMA 104278. Paralectotypes: ZMA 121.807 (2), 121.808 (2, C. baderi), 121.809 (1, hybrid: C. sipaliwini x C. baderi) Type catalog: Ferraris 2007:125 [ref. 29155]. Lectotype designation in Isbrücker 2000:38 [ref. 25151]. Fig. 46(1) in Hoedeman 1965 [ref. 19660] is Corydoras baderi Geisler 1969 according to Isbrücker 2000:38 [ref. 25151]. •Valid as Corydoras sipaliwini Hoedeman 1965 -- (Le Bail et al. 2000:208 [ref. 24549], Isbrücker 2000:36 [ref. 25151], Isbrücker 2001:235 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155]). •Valid as Hoplisoma sipaliwini (Hoedeman 1965) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma sipaliwini (Hoedeman 1965). Callichthyidae: Corydoradinae. Distribution: South America: coastal river basins, Guyana and Suriname. Habitat: freshwater.

sodalis, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1986:68, Figs. 6-7, 33B [Revue française d'Aquariologie Herpétologie v. 12 (no. 3) [for 1985]; ref. 8061] Río Yavari, Cano de Guavariba in Lago Matamata, 4°12'S, 70°17'W, Loreto, Peru. Holotype: NRM 13713. Paratypes: MZUSP 26817 (10); NRM 13714 (6), 26067 (2); ZMA 119337-38 (2, 10). Type catalog: Ferraris 2007:15 [ref. 29155]. •Valid as Corydoras sodalis Nijssen & Isbrücker 1986 -- (Burgess 1989:367 [ref. 12860], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis sodalis (Nijssen & Isbrücker 1986) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis sodalis (Nijssen & Isbrücker 1986). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Colombia and Peru). Habitat: freshwater.

solox, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1983:80, Figs. 9, 10g [Revue française d'Aquariologie Herpétologie v. 10 (no. 3); ref. 8294] Rio Oyapock, 60 kilometers south of Martinique village, 3°51'N, 51°53'W, Territory Amapa, Brazil. Holotype: MNHN 1983-0531. Paratypes: MNHN 1983-0532 (5), ZMA 119106 (4). Type catalog: Ferraris 2007:125 [ref. 29155]. •Valid as Corydoras solox Nijssen & Isbrücker 1983 -- (Burgess 1989:367 [ref. 12860], Le Bail et al. 2000:210 [ref. 24549], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Tencatt & Ohara 2016:432 [ref. 34627], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras solox Nijssen & Isbrücker 1983. Callichthyidae: Corydoradinae. Distribution: South America: Oyapock River basin and smaller coastal drainages, Brazil and French Guiana. Habitat: freshwater.

spectabilis, Corydoras Knaack [J.] 1999:74, 2 figs. [VDA--aktuell 1/2000; ref. 25358] Upper Rio Guaporé, in the area of Vila Bela, Mato Grosso State, Brazil. Holotype: ZMB 33150. Paratypes: ZMB 33151 (9) plus additional adult and juvenile specimens. Type catalog: Ferraris 2007:125 [ref. 29155]. •Valid as Corydoras spectabilis Knaack 1999 -- (Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[12] [ref. 34353]). •Valid as Brochis spectabilis (Knaack 1999) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis spectabilis (Knaack 1999). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, Brazil and Bolivia. Habitat: freshwater.

spilotus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1976:123, Fig. 14 [Bijdragen tot de Dierkunde v. 46 (no. 1); ref. 7077] Riacho dos Macacos, tributary of River Acaráu, Ceará State, Brazil. Holotype: ZMA 113590. Paratypes: CAS 31834 (1); DNOCS 18112 (5); MNRJ 8688 (142); USNM 213568 (2); ZMA 112284 (21), 113591 (2). Type catalog: Nijssen et al. 1982:39 [ref. 19236], Ferraris & Vari 1992:12 [ref. 19771], Ferraris 2007:110 [ref. 29155]. •Valid as Aspidoras spilotus Nijssen & Isbrücker 1976 -- (Burgess 1989:365 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Reis in Reis et al. 2003:292 [ref. 27061], Ferraris 2007:110 [ref. 29155], Leão et al. 2015:586 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227]). •Synonym of Aspidoras raimundi (Steindachner 1907) -- (Tencatt et al. 2022:121 [ref. 39729]). Current status: Synonym of Aspidoras raimundi (Steindachner 1907). Callichthyidae: Corydoradinae. Habitat: freshwater.

spilurus, Corydoras Norman [J. R.] 1926:95 [Annals and Magazine of Natural History (Series 9) v. 18 (no. 103); ref. 15602] Iponcin Creek, into Approuague River, French Guiana. Lectotype: BMNH 1926.3.2.738. Paralectotypes: BMNH 1926.3.2.739 (1), 1926.3.2.740-743 (4); ZMA 109950 [ex BMNH 1926.3.2.744] (1). Type catalog: Nijssen et al. 1982:50 [ref. 19236], Ferraris 2007:125 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1967:33 [ref. 7981]. •Valid as Corydoras spilurus Norman 1926 -- (Nijssen & Isbrücker 1980:215 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:45 [ref. 23454], Isbrücker 1999:40 [ref. 24040], Le Bail et al. 2000:212 [ref. 24549], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras spilurus Norman 1926. Callichthyidae: Corydoradinae. Distribution: South America: Approuague River basin, French Guiana and Suriname River basin, Suriname. Habitat: freshwater.

splendens, Callichthys Castelnau [F. L.] 1855:39, Pl. 18 (fig. 3) [Animaux nouveaux or rares v. 2; ref. 766] Rio Tocantins, Brazil. Holotype (unique): MNHN 0000-4291. Type catalog: Bertin & Estève 1950:65 [ref. 19575], Ferraris 2007:125 [ref. 29155]. •Valid as Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Koerber et al. 2022:48 [ref. 39235]). •Valid as Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:157 [ref. 22239], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], Britski et al. 1999:127 [ref. 24147], Isbrücker 2001:218 [ref. 26805], Reis in Reis et al. 2003:293 [ref. 27061], Barriga S. 2012:111 [ref. 35745], Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Bolivia, Colombia, Ecuador and Peru). Habitat: freshwater.

steindachneri, Corydoras Isbrücker [I. J. H.] & Nijssen [H.] 1973:4, Fig. 3 [Beaufortia v. 21 (no. 272); ref. 7567] Paranaguá, 25°32'S, 48°36'W, Paraná State, Brazil. Holotype: NMW 1504. Paratypes: ZMA 112657 (1). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Ferraris 2007:125 [ref. 29155]. •Valid as Corydoras steindachneri Isbrücker & Nijssen 1973 -- (Nijssen & Isbrücker 1980:206 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Reis et al. 2020:465 [ref. 38364]). •Valid as Hoplisoma steindachneri (Isbrücker & Nijssen 1973) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma steindachneri (Isbrücker & Nijssen 1973). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers in Paraná State (Brazil). Habitat: freshwater.

stellatum, Lepthoplosternum Reis [R. E.] & Kaefer [C. C.] 2005:725, Figs. 1A, 2 [Copeia 2005 (no. 4); ref. 28481] Igarapé Repartimento, tributary of Lago Tefé, 1.5 kilometers downstream from bridge on Tefé-Agrovila road, 3°24'28"S, 64°44'10"W, Tefé, Amazonas, Brazil. Holotype: MCP 35599. Paratypes: MCP 30651 (7, 1 c&s); UF 146223 (4). Type catalog: Ferraris 2007:128 [ref. 29155]. •Valid as Lepthoplosternum stellatum Reis & Kaefer 2005 -- (Ferraris 2007:128 [ref. 29155]). Current status: Valid as Lepthoplosternum stellatum Reis & Kaefer 2005. Callichthyidae: Callichthyinae. Distribution: Tefé Lake tributary, upper Amazon basin, Brazil. Habitat: freshwater.

stenocephalus, Corydoras Eigenmann [C. H.] & Allen [W. R.] 1942:177, Pl. 12 (fig. 2) [Fishes of western South America; ref. 1246] Lake Yarinococha (8°15'S, 74°45'W), Río Ucayali system, Loreto, Peru. Holotype (unique): CAS 36386 [ex IU 15817 and CAS 15817]. Type catalog: Ferraris 2007:125 [ref. 29155]. •Synonym of Corydoras acutus Cope 1872 -- (Nijssen & Isbrücker 1980:215 [ref. 6910]). •Valid as Corydoras stenocephalus Eigenmann & Allen 1942 -- (Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388], Meza-Vargas et al. 2021:25 [ref. 39298], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras stenocephalus Eigenmann & Allen 1942. Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon basin (Bolivia, Ecuador and Peru). Habitat: freshwater.

sterbai, Corydoras Knaack [J.] 1962:131, Pl. 12 (figs. 2a-c) [Senckenbergiana Biologica v. 43 (no. 2); ref. 6038] Rio Guaporé, Brazil. Holotype: SMF 5476. Paratypes: MCP 27959 (1), ZMA 123550 (1). Type information: Knaack 2003:16 [ref. 27879]. Type catalog: Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras sterbai Knaack 1962 -- (Nijssen & Isbrücker 1980:200 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:125 [ref. 29155], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], Ohara et al. 2016:550 [ref. 34772]). •Valid as Hoplisoma sterbai (Knaack 1962) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma sterbai (Knaack 1962). Callichthyidae: Corydoradinae. Distribution: South America: Guaporé River drainage, western Amazon basin, central Brazil and Bolivia. Habitat: freshwater.

stevardii, Hoplosternum Gill [T. N.] 1858:401 [41] [Annals of the Lyceum of Natural History of New York v. 6 (nos 10-13, art. 38); ref. 1750] Trinidad Island, West Indies. Syntypes: (2) USNM 5944 (1). Type catalog: Ferraris & Vari 1992:16 [ref. 19771], Ferraris 2007:128 [ref. 29155]. On p. 41 of separate. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:128 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

subulatus, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:311 [Histoire naturelle des poissons v. 15; ref. 1008] Cayenne, French Guiana; Buenos Aires, Argentina. Syntypes: MNHN 0000-4268 to 4269 (1, 1) Cayenne, 0000-4270 (1) Buenos Aires. Type catalog: Bertin & Estève 1950:66 [ref. 19575], Ferraris 2007:127 [ref. 29155]. •Synonym of Hoplosternum littorale (Hancock 1828) -- (Reis 1997:302 [ref. 22747], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:127 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:56 [ref. 35267]). Current status: Synonym of Hoplosternum littorale (Hancock 1828). Callichthyidae: Callichthyinae. Habitat: freshwater.

sulcatus, Callichthys Kner [R.] 1855:110 [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 17; ref. 2629] Marabitanos, Rio Branco, Brazil. Lectotype: NMW 47755 [as 4775 on p. 312]. Paralectotypes: NMW 47748 (1), 47756 (1), 47760 (1), 47767 (2), 47771 (1). Type catalog: Ferraris 2007:129 [ref. 29155]. Appeared first as name only in Kner 1854:141 [separate p. 6] [ref. 18262]. Lectotype selected by Reis 1997:311, 313 [ref. 22747]. •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis picta (Müller & Troschel 1849) -- (Reis et al. 2005:680 [ref. 28320], Ferraris 2007:129 [ref. 29155]). Current status: Synonym of Megalechis picta (Müller & Troschel 1849). Callichthyidae: Callichthyinae. Habitat: freshwater.

surinamensis, Corydoras schwartzi Nijssen [H.] 1970:39, Fig. 22 [Beaufortia v. 18 (no. 230); ref. 7452] Creek at right bank of Coppename River system, 3°52'30"N, 56°53'00"W, District Saramacca, Suriname. Holotype: ZMA 105876. Paratypes: CAS 14506 [ex ZMA 105.878] (2); BMNH 1970.6.16.1-2 (2); FMNH 78362 [ex ZMA 105879] (1); IRSNB 470 (1); NMW 61109 (2); RMNH 25819 (2); USNM 204223 (2); ZMA 105878 (63), 105879 (27 or 28). Type catalog: Nijssen et al. 1982:50 [ref. 19236], Ibarra & Stewart 1987:27 [ref. 12367], Walschaerts 1987:19 [ref. 20755], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras surinamensis Nijssen 1970 -- (Nijssen & Isbrücker 1980:201 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:43 [ref. 23454], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:126 [ref. 29155]). •Valid as Hoplisoma surinamense (Nijssen 1970) -- (Dias et al. 2024:27 [ref. 41219] as surinamensis). Current status: Valid as Hoplisoma surinamense (Nijssen 1970). Callichthyidae: Corydoradinae. Distribution: South America: Coppename River drainage, Suriname. Habitat: freshwater.

surinamensis, Hoplosternum thoracatum Hoedeman [J. J.] 1952:5 [Beaufortia v. 1 (no. 12); ref. 12773] Suriname. Holotype: ZMA 100292. Paratypes: ZMA 100293 (2), 100295 (2), 100297-98 (1, 1), 100299 (orig. 6, now 5), 100300-01 (1, 1). Type catalog: Nijssen et al. 1982:54 [ref. 19236]. •Synonym of Hoplosternum thoracatum (Valenciennes 1840), but a valid subspecies as described -- (Burgess 1989:364 [ref. 12860]). •Synonym of Megalechis personata (Ranzani 1841) -- (Reis 1997:313 [ref. 22747], Reis in Reis et al. 2003:305 [ref. 27061]). •Synonym of Megalechis thoracata (Valenciennes 1840) -- (Reis et al. 2005:678 [ref. 28320]). Current status: Synonym of Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Habitat: freshwater.

sychri, Corydoras Weitzman [S. H.] 1960:151, Figs. 7-8 [Stanford Ichthyological Bulletin v. 7 (no. 4); ref. 9614] South America, specific locality unkown (aquarium specimen) [apparently Province Maynas, Río Nanay, right bank near Shiriyana, Peru]. Holotype (unique): CAS-SU 51295. Type catalog: Ferraris 2007:126 [ref. 29155]. Locality from Isbrücker 2001:236 [ref. 26805]. •Valid as Corydoras sychri Weitzman 1960 -- (Nijssen & Isbrücker 1980:198 [ref. 6910], Burgess 1989:367 [ref. 12860], Grant 1998:45 [ref. 23454], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:126 [ref. 29155], Lima & Britto 2020:528 [ref. 37324], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Brochis sychri (Weitzman 1960) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis sychri (Weitzman 1960). Callichthyidae: Corydoradinae. Distribution: South America: Nanay River basin (Peru). Habitat: freshwater.

taeniatus, Corydoras Stansch [K.] 1914:326, Fig. (p. 327) [Die exotischen Zierfische in Wort und Bild; ref. 19661] Amazon River. No types known. Not available according to Nijssen & Isbrücker 1979:133 [ref. 19254]. The species is named 'Corydoras taeniatus?" in the original description, which qualifies as a conditional proposal according to Art. 11.5.1 of ICZN; as it was published before 1961 it cannot be excluded on this account alone. The description includes several diagnostic characters, as well as an illustration; therefore the species name is here considered as available. Available according to Grant 2019:5 [ref. 37238]. •Synonym of Corydoras hastatus Eigenmann & Eigenmann 1888 -- (Grant 2019:6 [ref. 37238]). Current status: Synonym of Gastrodermus hastatus (Eigenmann & Eigenmann 1888). Callichthyidae: Corydoradinae. Habitat: freshwater.

taiosh, Callichthys Castelnau [F. L.] 1855:39, Pl. 19 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Chiquitos, Bolivia. Holotype: MNHN 0000-4290. Type catalog: Ferraris 2007:125 [ref. 29155]. •Valid as Brochis taiosh (Castelnau 1855) -- (Isbrücker 2001:218 [ref. 26805] as a doubtful species). •Synonym of Corydoras splendens (Castelnau 1855) -- (Ferraris 2007:125 [ref. 29155]). •Synonym of Brochis splendens (Castelnau 1855) -- (Nijssen & Isbrücker 1970:157 [ref. 22239], Reis in Reis et al. 2003:293 [ref. 27061]). Current status: Synonym of Brochis splendens (Castelnau 1855). Callichthyidae: Corydoradinae. Habitat: freshwater.

tamoata, Callichthys Bleeker [P.] 1864:22 [Natuurkundige Verhandelingen van de Hollandsche Maatschappij der Wetenschappen te Haarlem (Ser. 2) v. 20; ref. 14181] Suriname. Syntypes: (10) RMNH and literature sources. Type catalog: Ferraris 2007:111 [ref. 29155]. Based on name given by Linnaeus in 1754, and named by Linnaeus in 1758 as callichthys (see Boeseman 1972:315 [ref. 19698]). •Synonym of Callichthys callichthys (Linnaeus 1758) -- (Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:111 [ref. 29155], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:55 [ref. 35267]). Current status: Synonym of Callichthys callichthys (Linnaeus 1758). Callichthyidae: Callichthyinae. Habitat: freshwater.

taurus, Aspidoras Lima [F. C. T.] & Britto [M. R.] 2001:1011, Figs. 1-2 [Copeia 2001 (no. 4); ref. 25818] River Itiquira, River Paraguai system, 16°56'S, 53°32'W, Fazenda Cabeceira do Itiquira, close to highway BR-364, Alto Garças, Mato Grosso State, Brazil. Holotype: MZUSP 57154. Paratypes: AMNH 229525 (5); MCP 25269 (5); MNRJ 19951 (5); MZUSP 41404 (22), 41417 (2), 41455 (228), 41488 (2); UMMZ 236693 (5); USNM 363174 (5); ZMA 123518 (5). Type catalog: Ferraris 2007:110 [ref. 29155]. Not treated in Reis in Reis et al. 2003:293 [ref. 27061], added in Corrigenda (2005). •Valid as Aspidoras taurus Lima & Britto 2001 -- (Ferraris 2007:110 [ref. 29155], Wosiacki et al. 2014:316 [ref. 33356], Leão et al. 2015:578 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227]). •Synonym of Aspidoras albater Nijssen & Isbrücker 1976 -- (Tencatt et al. 2022:23 [ref. 39729]). Current status: Synonym of Aspidoras albater Nijssen & Isbrücker 1976. Callichthyidae: Corydoradinae. Habitat: freshwater.

thanatos, Corydoras Tencatt [L. F. C.], Ohara [W. M.], Sousa [L. M.] & Britto [M. R.] 2022:4, Figs. 1-4 [Neotropical Ichthyology v. 20 (no. 3): e220070; ref. 39741] Stream with unknown name, tributary to the rio Jamanxim, rio Tapajós basin, Novo Progresso Municipality, Pará State, Brazil, 08°23'06"S, 55°19'43"W. Holotype: MNRJ 53287. Paratypes: CITL, INPA, MZUSP, NUP. •Valid as Hoplisoma thanatos (Tencatt, Ohara, Sousa & Britto 2022). Current status: Valid as Hoplisoma thanatos (Tencatt, Ohara, Sousa & Britto 2022). Callichthyidae: Corydoradinae. Distribution: South America: Jamanxim River drainage, Tapajós basin, Brazil. Habitat: freshwater.

thoracatus, Callichthys Valenciennes [A.] in Cuvier & Valenciennes 1840:309, Pl. 443 [Histoire naturelle des poissons v. 15; ref. 1008] Mana River, French Guiana. Holotype (unique): MNHN 0000-4266. Type catalog: Bertin & Estève 1950:65 [ref. 19575], Ferraris 2007:129 [ref. 29155]. •Mention -- (Malabarba 1989:148 [ref. 14217]). •Valid as Hoplosternum thoracatum (Valenciennes 1840) -- (Ovchynnyk 1967:37 [ref. 37559], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:364 [ref. 12860], de Oliveira & de Moraes Junior 1997:2 [ref. 23461], Galvis et al. 1997:78 [ref. 23651], Torelli et al. 1997:70 [ref. 24612]). •Valid as Megalechis thoracata (Valenciennes 1840) -- (Reis 1997:310 [ref. 22747], Román-Valencia et al. 1999:60 [ref. 24926], Le Bail et al. 2000:182 [ref. 24549], Lasso et al. 2001:98 [ref. 25928], Camargo & Isaac 2001:145 [ref. 27639], Reis in Reis et al. 2003:305 [ref. 27061], Reis et al. 2005:678 [ref. 28320], Ferraris 2007:129 [ref. 29155], Phillip et al. 2013:19 [ref. 32896], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:150, 190 [ref. 35004], DoNascimiento 2016:531 [ref. 34727], Melo et al. 2016:134 [ref. 34701], DoNascimiento et al. 2017:72 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298], Koerber et al. 2022:47 [ref. 39235], Taphorn et al. 2022:45 [ref. 41297], Gurgel-Lourenço et al. 2023:75 [ref. 41056], Vieira et al. 2023:20 [ref. 40759], Limeira-Filho et al. 2024:7 [ref. 41573]). Current status: Valid as Megalechis thoracata (Valenciennes 1840). Callichthyidae: Callichthyinae. Distribution: South America: Amazon, Orinoco and Paraguay River basins, and coastal rivers of the Guianas and northern Brazil (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Trinidad and Tobago, and Venezuela). IUCN (2023): Least Concern. Habitat: freshwater.

tordilho, Lepthoplosternum Reis [R. E.] 1997:321, Fig. 16 [Ichthyological Exploration of Freshwaters v. 7 (no. 4); ref. 22747] Marginal lagoon near sanga do Junco, on dust road between highway BR-116 and Barra do Ribeiro, Rio Grande do Sul State, Brazil. Holotype: MCP 16310. Paratypes: MCP 16308 (3), 16309 (2, c&s); UFRGS 901-02 (1, 2), 966 (2), 4195 (1, c&s). Type catalog: Ferraris 2007:129 [ref. 29155]. •Valid as Lepthoplosternum tordilho Reis 1997 -- (Reis 1998:353 [ref. 23849], Reis in Reis et al. 2003:305 [ref. 27061], Reis & Kaefer 2005:724 [ref. 28481], Ferraris 2007:129 [ref. 29155], Bertaco et al. 2016:416 [ref. 34561], Giora & Wingert 2023:65 [ref. 41026]). Current status: Valid as Lepthoplosternum tordilho Reis 1997. Callichthyidae: Callichthyinae. Distribution: South America: Jacui River drainage (southern Brazil). Habitat: freshwater.

treitlii, Corydoras Steindachner [F.] 1906:478 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Mathematisch-Naturwissenschaftlichen Classe v. 43; ref. 15716] Creek into Rio Parnaíba near Alto Parnaiba (= Victoria, 9°08'S, 45°56'W), Maranhâo, Brazil. Lectotype: NMW 61103 [ex NMW 46798]. Paralectotypes: (many) IRSNB 554 (1); MNHN 1907-0177 (1); MZUT 1677 (1); NMW 7035-48 (14), 9355-67 (10), 46796-801 (3, 13 now 10, 9, 4, ?, 1); RMNH 7974 (1); SMF 5356 [ex NMW] (1);CAS-SU 35054 (1); ZMA 110481 [ex NMW 46801] (11); ZSM 17993-94 [ex NMW 9355-56] and 7611 (3). Type catalog: Tortonese 1940:136 [ref. 21559], Bertin & Estève 1950:65 [ref. 19575], Nijssen et al. 1982:51 [ref. 19236], Walschaerts 1987:19 [ref. 20755], Ferraris 2007:126 [ref. 29155], Neumann 2011:243 [ref. 31652]. Lectotype selected by Weitzman 1964:116 [ref. 3719]. •Valid as Corydoras treitlii Steindachner 1906 -- (Nijssen & Isbrücker 1980:215 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker 1999:40 [ref. 24040], Isbrücker 2001:236 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Ferraris 2007:126 [ref. 29155], Ramos et al. 2014:4 [ref. 35321], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[18] [ref. 34388], Tencatt & Ohara 2016:432 [ref. 34627], Melo et al. 2016:376 [ref. 35317], Koerber et al. 2022:48 [ref. 39235], Dias et al. 2024:23 [ref. 41219], Limeira-Filho et al. 2024:7 [ref. 41573]). Current status: Valid as Corydoras treitlii Steindachner 1906. Callichthyidae: Corydoradinae. Distribution: South America: Parnaíba River drainage (northeastern Brazil). IUCN (2022): Least Concern. Habitat: freshwater.

trilineatus, Corydoras Cope [E. D.] 1872:281, Pl. 6 (figs. 2a-c) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributary of Río Ambyiacu, Peru. Lectotype: ANSP 8294. Paralectotypes: ANSP 8295 (1). Type catalog: Böhlke 1984:32 [ref. 13621], Ferraris 2007:126 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1980:194 [ref. 6910]. •Valid as Corydoras trilineatus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:367 [ref. 12860], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:303 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Ferraris 2007:126 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Sarmiento et al. 2014:190 [ref. 35004], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Lima & Sazima 2017:30 [ref. 35111], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma trilineatum (Cope 1872) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma trilineatum (Cope 1872). Callichthyidae: Corydoradinae. Distribution: South America: Brazil, Ecuador, Bolivia, Colombia, Peru and Suriname. Habitat: freshwater.

triseriatus, Corydoras nattereri Ihering [R. von] 1911:386 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Rio Doce, Espírito Santo State, Brazil. Lectotype: MZUSP [ex DZSASP] 342. Paralectotypes: MZUSP [ex DZSASP] 5331/5358 (orig. 28); ZMA 110940-41 (1, 1). Type catalog: Nijssen et al. 1982:47 [ref. 19236], Ferraris 2007:121 [ref. 29155]. Lectotype selected by Britski 1969:207 [ref. 12401]. •Synonym of Corydoras nattereri Steindachner 1876 -- (Nijssen & Isbrücker 1980:204 [ref. 6910], Isbrücker 2001:231 [ref. 26805], Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:121 [ref. 29155]). •Synonym of Hoplisoma nattereri (Steindachner 1876). Current status: Synonym of Hoplisoma nattereri (Steindachner 1876). Callichthyidae: Corydoradinae. Habitat: freshwater.

tukano, Corydoras Britto [M. R.] & Lima [F. C. T.] 2003:84, Figs. 1-5 [Neotropical Ichthyology v. 1 (no. 2); ref. 27314] Río Tiquié, communidade de Caruru, beaches in pool below the fall, 0°16'28.9"N, 69°54'53.6"W, Amazonas State, Brazil. Holotype: MZUSP 82100. Paratypes: ANSP 179201 (1); CAS 217960 (1); INPA 21423 (2); MNRJ 25355 (2); MZUSP 64096 (4), 65689 (2), 81153 (9), 81179 (2), 81194 (5), 81216 (2), 81244 (16), 81276 (5). Type catalog: Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras tukano Britto & Lima 2003 -- (Britto et al. 2007:294 [ref. 29283], Ferraris 2007:126 [ref. 29155], Tencatt et al. 2014:78 [ref. 33230], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[12] [ref. 34387], Tencatt et al. 2016:[18] [ref. 34388], Lima & Sazima 2017:30 [ref. 35111]). •Valid as Hoplisoma tukano (Britto & Lima 2003) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma tukano (Britto & Lima 2003). Callichthyidae: Corydoradinae. Distribution: South America: Negro River drainage, Brazil. Habitat: freshwater.

ucamara, Lepthoplosternum Reis [R. E.] & Kaefer [C. C.] 2005:728, Figs. 1C, 4 [Copeia 2005 (no. 4); ref. 28481] Small creek into cocho Zapote, tributary to Río Pacaya, 5°20'16"S, 74°29'10"W, Río Ucayali drainage, Pacaya-Samiria National Reserve, Loreto, Peru. Holotype: MUSM 23000. Paratypes: MCP 29316 (3, 1 c&s), 29318 (3, 1 c&s), 29329 (1), 29582 (1), 34560 (3); MUSM 23001 (2); UF 146222 (2). Type catalog: Ferraris 2007:129 [ref. 29155]. •Valid as Lepthoplosternum ucamara Reis & Kaefer 2005 -- (Ferraris 2007:129 [ref. 29155], Meza-Vargas et al. 2021:25 [ref. 39298]). Current status: Valid as Lepthoplosternum ucamara Reis & Kaefer 2005. Callichthyidae: Callichthyinae. Distribution: South America: Ucayli River, Peru, and Japurá River mouth (Brazil and Peru). Habitat: freshwater.

undulatus, Corydoras Regan [C. T.] 1912:217 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] La Plata, Buenos Aires, Argentina [aquarium import of doubtful origin, most likely from the Entre Ríos area, Argentina]. Holotype: BMNH 1912.7.10.5. Paratypes: BMNH 1909.9.28.3-4 (2). Type catalog: Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras undulatus Regan 1912 -- (Nijssen & Isbrücker 1980:214 [ref. 6910], Malabarba 1989:147 [ref. 14217], Burgess 1989:367 [ref. 12860], Isbrücker 2001:237 [ref. 26805], Knaack 2002:52 [ref. 27224], Reis in Reis et al. 2003:304 [ref. 27061], López et al. 2003:43 [ref. 27366], Casciotta et al. 2003:129 [ref. 28130], Casciotta et al. 2003:129 [ref. 28130], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Menni 2004:82 [ref. 28131], Ferraris 2007:126 [ref. 29155], Calviño & Alonso 2010:200 [ref. 30829], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117], Bertaco et al. 2016:416 [ref. 34561], Ohara et al. 2016:550 [ref. 34772], Nión et al. 2016:31 [ref. 35565], Grant 2018:26 [ref. 36057], Bono et al. 2019:3 [ref. 36480], Giora & Wingert 2023:63 [ref. 41026], Loureiro et al. 2023:94 [ref. 40506]). •Valid as Gastrodermus undulatus (Regan 1912) -- (Dias et al. 2024:24 [ref. 41219], Koerber 2024:4 [ref. 41228]). Current status: Valid as Gastrodermus undulatus (Regan 1912). Callichthyidae: Corydoradinae. Distribution: South America: Paraguay, Paraná and Uruguay River basins and Laguna dos Patos (Paraguay, Argentina, Uruguay and Brazil). Habitat: freshwater.

urostriatum, Decapogon Miranda Ribeiro [A. de] 1912:15 [Loricariidae, Callichthyidae, Doradidae e Trichomycteridae Annexo no. 5; ref. 3718] Manaus, Amazonas, Brazil. Lectotype: MNRJ 1067A. Paralectotypes: MACN 7910 (1), MNRJ 1067 (12). Type catalog: Miranda Ribeiro 1955:395 [ref. 12732] as urotriatum, Miranda Ribeiro 1959:6 [ref. 10392], Braga & Piacentino 1994:106 [ref. 23697] as urotriatum, Ferraris 2007:127 [ref. 29155]. Spelled urotriatum in heading of account, but corrected in attached printed errata. Lectotype selected by Miranda Ribeiro 1953:395 [ref. 12732] [but perhaps specimen not isolated]. •Valid as Dianema urostriatum (Miranda Ribeiro 1912) -- (Burgess 1989:364 [ref. 12860], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:127 [ref. 29155]). Current status: Valid as Dianema urostriatum (Miranda Ribeiro 1912). Callichthyidae: Callichthyinae. Distribution: Amazon River basin, Brazil. Habitat: freshwater.

urucu, Corydoras Britto [M. R.], Wosiacki [W. B.] & Montag [L. F. A.] 2009:684, Figs. 1-3 [Copeia 2009 (no. 4); ref. 30609] Coari, Igarapé da Onça, Rio Urucu basin, tributary of Lago Coari, Rio Solimões system, 4°52'09.12"S, 65°18'03.6"W, Amazonas State, Brazil. Holotype: MPEG 14924. Paratypes: MNRJ 32446 (4); MPRG 11252 (4, 2 c&s), 12239 (6), 15012 (8). •Valid as Corydoras urucu Britto, Wosiacki & Montag 2009 -- (Tencatt et al. 2019:[14] [ref. 36697], Bentley et al. 2021:196 [ref. 38185]). •Valid as Hoplisoma urucu (Britto, Wosiacki & Montag 2009) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma urucu (Britto, Wosiacki & Montag 2009). Callichthyidae: Corydoradinae. Distribution: South America: Urucu River drainage, Solimões River system, Amazon basin, Brazil. Habitat: freshwater.

velites, Aspidoras Britto [M. R.], Lima [F. C. T.] & Moreira [C. R.] 2002:728, Figs. 1-3 [Proceedings of the Biological Society of Washington v. 115 (no. 4); ref. 26546] Córrego Boiadeiro, kilometer 487.08 of Ferronorte railroad, 17°20'01"S, 53°14'53"W, município de alto Araguaia, Mato Grosso State, Brazil. Holotype: MZUSP 74447. Paratypes: AMNH 232394 (5); INPA 18147 (5); MCP 29060 (5); MZUSP 73247 (25), 73264 (89), 73351 (19); USNM 367502 (5). Type catalog: Ferraris 2007:110 [ref. 29155]. •Valid as Aspidoras velites Britto, Lima & Moreira 2002 -- (Reis in Reis et al. 2003:293 [ref. 27061], Britto et al. 2005:477 [ref. 28459], Ferraris 2007:110 [ref. 29155], Wosiacki et al. 2014:316 [ref. 33356], Leão et al. 2015:578 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Tencatt et al. 2022:141 [ref. 39729], Dias et al. 2024:24 [ref. 41219]). Current status: Valid as Aspidoras velites Britto, Lima & Moreira 2002. Callichthyidae: Corydoradinae. Distribution: South America: upper Araguaia River drainage, Mato Grosso and Goiás, Brazil. Habitat: freshwater.

venezuelanus, Corydoras Ihering [R. von] 1911:383 [Revista do Museo Paulista, São Paulo v. 8 (1910); ref. 14822] Río Cabriales, Valencia, State of Carabobo, Venezuela. Lectotype: MZUSP [ex DZSASP] 146. Paralectotypes: MZUSP [ex DZSASP] 5398 (1), MZUSP [ex DZSASP] 5399 (1). Type catalog: Ferraris 2007:112 [ref. 29155]. Lectotype selected by Britski 1969:208 [ref. 12401]. •Synonym of Corydoras aeneus (Gill 1858) -- (Nijssen & Isbrücker 1980:207 [ref. 6910], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:112 [ref. 29155], Ohara et al. 2016:549 [ref. 34772], Litz & Koerber 2014:23 [ref. 33622], Mirande & Koerber 2015:39 [ref. 35117], Koerber et al. 2017:57 [ref. 35267]). •Synonym of Osteogaster aenea (Gill 1858). Current status: Synonym of Osteogaster aenea (Gill 1858). Callichthyidae: Corydoradinae. Habitat: freshwater.

verissimi, Decapogon Miranda Ribeiro [A. de] 1911:154, Pl. 36 (fig. 1) [Arquivos do Museu Nacional de Rio de Janeiro v. 16; ref. 3716] Pará, Brazil. Lectotype: MNRJ 774A. Paralectotypes: MNRJ 774 (1). Type catalog: Miranda Ribeiro 1955:395 [ref. 12732], Miranda Ribeiro 1959:5 [ref. 10392] as cotypes, Ferraris 2007:127 [ref. 29155]. Lectotype selected by Miranda Ribeiro 1953:395 [ref. 12732] [but perhaps specimen not isolated]. •Synonym of Cataphractops melampterus (Cope 1871) -- (Burgess 1989:364 [ref. 12860]). •Synonym of Dianema longibarbis Cope 1872 -- (Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:127 [ref. 29155]). Current status: Synonym of Dianema longibarbis Cope 1872. Callichthyidae: Callichthyinae. Habitat: freshwater.

virescens, Corydoras Miranda Ribeiro [A. de] 1912:16 [Loricariidae, Callichthyidae, Doradidae e Trichomycteridae Annexo no. 5; ref. 3718] Rio Paraguay near Cáceres, 16°05'S, 57°40'W, Mato Grosso State, Brazil. Holotype (unique): MNRJ 3806. Type catalog: Miranda Ribeiro 1955:395 [ref. 12732], Miranda Ribeiro 1959:15 [ref. 10392], Ferraris 2007:123 [ref. 29155]. •Valid as Corydoras virescens Miranda Ribeiro 1912 -- (Isbrücker 2001:237 [ref. 26805]). •Synonym of Corydoras polystictus Regan 1912 -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Reis in Reis et al. 2003:301 [ref. 27061], Ferraris 2007:123 [ref. 29155], Mirande & Koerber 2015:40 [ref. 35117], Koerber et al. 2017:58 [ref. 35267]). •Synonym of Hoplisoma polystictum (Regan 1912). Current status: Synonym of Hoplisoma polystictum (Regan 1912). Callichthyidae: Corydoradinae. Habitat: freshwater.

virginiae, Corydoras Burgess [W. E.] 1993:152, Figs. [Tropical Fish Hobbyist v. 41 (no. 12) (issue no. 450); ref. 20758] Río Ucayali, Peru. Holotype: MZUSP 45715. Paratypes: USNM 32368 (3). Type catalog: Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras virginiae Burgess 1993 -- (Burgess & Finley 1996:168 [ref. 22901], Isbrücker 1999:41 [ref. 24040], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:126 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Tencatt et al. 2023:20 [ref. 40562]). •Valid as Brochis virginiae (Burgess 1993) -- (Dias et al. 2024:25 [ref. 41219]). Current status: Valid as Brochis virginiae (Burgess 1993). Callichthyidae: Corydoradinae. Distribution: South America: western Amazon basin, Peru and Ecuador. Habitat: freshwater.

virgulatus, Aspidoras Nijssen [H.] & Isbrücker [I. J. H.] 1980:133, Figs. 1-2 [Bulletin Zoölogisch Museum, Universiteit van Amsterdam v. 7 (no. 13); ref. 6921] Córrego Chambado, Espírito Santo, Munic. de Linhares, Espírito State, Brazil. Holotype: MNRJ 5371. Paratypes: MNRJ 5143 (5), 5366 (2), 5370 (1), 5409 (2), 10547 [ex 5371] (3); ZMA 116218-19 (1, 1). Type catalog: Nijssen et al. 1982:39 [ref. 19236], Ferraris 2007:110 [ref. 29155].. •Valid as Aspidoras virgulatus Nijssen & Isbrücker 1980 -- (Burgess 1989:365 [ref. 12860], Britto 2000:1048 [ref. 25022], Isbrücker 2001:217 [ref. 26805], Britto et al. 2002:729 [ref. 26546], Reis in Reis et al. 2003:293 [ref. 27061], Ferraris 2007:110 [ref. 29155], Leão et al. 2015:586 [ref. 33891], Tencatt & Bichuette 2017:21 [ref. 35168], Oliveira et al. 2017:[7] [ref. 35227], Silva et al. 2020:10 [ref. 37809]). •Valid as Scleromystax virgulatus (Nijssen & Isbrücker 1980) -- (Tencatt et al. 2022:4 [ref. 39729], Dias et al. 2024:24 [ref. 41219], Vieira-Guimarães et al. 2024:44 [ref. 41258]). Current status: Valid as Scleromystax virgulatus (Nijssen & Isbrücker 1980). Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers, Espírito Santo and Bahia (Brazil). Habitat: freshwater.

vittatus, Corydoras blochi Nijssen [H.] 1971:97, Fig. 7 [Beaufortia v. 19 (no. 250); ref. 7698] Tributary of Rio Itapicurú at Caxias, 4°53'S, 43°20'W, Maranhão State, Brazil. Holotype: ZMA 109990. Paratypes: NMW 46803 (2), ZMA 109989 (2). Type catalog: Nijssen et al. 1982:43 [ref. 19236], Ferraris 2007:126 [ref. 29155]. •Synonym of Corydoras blochi Nijssen 1971, but a valid subspecies as described -- (Nijssen & Isbrücker 1980:218 [ref. 6910], Burgess 1989:365 [ref. 12860], Isbrücker 1999:41 [ref. 24040]). •Valid as Corydoras vittatus Nijssen 1971 -- (Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:126 [ref. 29155], Barriga Salazar 2014:111 [ref. 35745], Ramos et al. 2014:4 [ref. 35321], Tencatt et al. 2014:91 [ref. 33232], Tencatt & Ohara 2016:432 [ref. 34627], Koerber et al. 2022:48 [ref. 39235], Vieira et al. 2023:20 [ref. 40759], Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras vittatus Nijssen 1971. Callichthyidae: Corydoradinae. Distribution: South America: northeastern Brazil and Ecuador. Habitat: freshwater.

weitzmani, Corydoras Nijssen [H.] 1971:91, Fig. 1 [Beaufortia v. 19 (no. 250); ref. 7698] Río Vilcanota system at Cuzco, 13°32'S, 71°57'W, Cuzco State, Peru. Holotype: FMNH 69934. Paratypes: FMNH 75955 (2), USNM 206018 (1), ZMA 110391 (2). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Ibarra & Stewart 1987:28 [ref. 12367], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras weitzmani Nijssen 1971 -- (Nijssen & Isbrücker 1980:212 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:367 [ref. 12860], Isbrücker 2001:237 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Britto & Lima 2003:89 [ref. 27314], Britto et al. 2007:294 [ref. 29283], Ferraris 2007:126 [ref. 29155], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Hoplisoma weitzmani (Nijssen 1971) -- (Dias et al. 2024:27 [ref. 41219]). Current status: Valid as Hoplisoma weitzmani (Nijssen 1971). Callichthyidae: Corydoradinae. Distribution: South America: upper Amazon basin (Peru). Habitat: freshwater.

wotroi, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:44, Pl. 5 (fig. 3) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Outlet of Kleine Saramacca River, Saramacca River system, Brokopondo, Suriname. Holotype: RMNH 25331. Paratypes: RMNH 25332 (2), ZMA 104641 (1). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Provenzano et al. 1998:6 [ref. 24196], Ferraris 2007:120 [ref. 29155]. See Grant 1998:43 [ref. 23454]. •Synonym of Corydoras melanistius Regan 1912, subspecies brevirostris Fraser-Brunner 1947 -- (Nijssen & Isbrücker 1980:197 [ref. 6910]). •Status uncertain -- (Isbrücker 2001:237 [ref. 26805]). •Synonym of Corydoras melanistius Regan 1912 -- (Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155]). •Synonym of Hoplisoma melanistium (Regan 1912). Current status: Synonym of Hoplisoma melanistium (Regan 1912). Callichthyidae: Corydoradinae. Habitat: freshwater.

xinguensis, Corydoras Nijssen [H.] 1972:429, Fig. 9 [Netherlands Journal of Zoology v. 21 (no. 4); ref. 673] Suia Missú Creek, tributary of upper Rio Xingu near Posto Diauarum, about 11°15'S, 53°00'W, Mato Grosso State, Brazil. Holotype: IRSNB 500. Paratypes: IRSNB 501 (orig. 3, now 2), 502 (orig. 2, now 1), 511 (orig. 2, now 1); MZUSP [ex IRSNB 501] (1), [ex IRSNB 502] (1), [ex IRSNB 511] (1); USNM 205870 (1); ZMA 110392-93 (2, 1). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Walschaerts 1987:19-20 [ref. 20755], Ferraris & Vari 1992:15 [ref. 19771], Ferraris 2007:126 [ref. 29155]. •Valid as Corydoras xinguensis Nijssen 1972 -- (Nijssen & Isbrücker 1980:202 [ref. 6910], Burgess 1989:367 [ref. 12860], Isbrücker & Nijssen 1992:13 [ref. 20559], Grant 1998:43 [ref. 23454], Isbrücker 2001:238 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Ferraris 2007:126 [ref. 29155], Espíndola et al. 2014:26 [ref. 33269], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388]). •Valid as Hoplisoma xinguense (Nijssen 1972) -- (Dias et al. 2024:27 [ref. 41219] as xinguensis). Current status: Valid as Hoplisoma xinguense (Nijssen 1972). Callichthyidae: Corydoradinae. Distribution: South America: upper Xingu River basin, Brazil. Habitat: freshwater.

zawadzkii, Corydoras Tencatt [L. F. C.] & Ohara [W. M.] 2016:431, Figs. 1-3 [Zootaxa 4144 (no. 3); ref. 34627] Mato Grosso State, Colniza Municipality, Guariba District, igarapé Pica-Pau, a tributary to the rio Juma rio Aripuanã drainage, rio Madeira basin, Brazil, 09°22'27"S, 60°02'59"W. Holotype: MNRJ 45565. Paratypes: INPA, MCP, MZUSP, NUP, ZUFMS-PIS. Type catalog: Oliveira et al. 2022:12 [ref. 39255]. •Valid as Corydoras zawadzkii Tencatt & Ohara 2016 -- (Dias et al. 2024:23 [ref. 41219]). Current status: Valid as Corydoras zawadzkii Tencatt & Ohara 2016. Callichthyidae: Corydoradinae. Distribution: South America: Rio Aripuanã drainage (Mato Grosso, Brazil). Habitat: freshwater.

zygatus, Corydoras Eigenmann [C. H.] & Allen [W. R.] 1942:175, Pl. 12 (fig. 1) [Fishes of western South America; ref. 1246] Río Hallagua system, Yurimaguas (5°54'S, 76°04'W), Loreto, Peru. Holotype: CAS 24756 [ex IU 15704]. Paratypes: CAS 24757 [ex IU 15704] (7). Type catalog: Ferraris 2007:126 [ref. 29155]. We treat the species epithet (= yoke-shaped) as a declinable adjective. •Valid as Corydoras zygatus Eigenmann & Allen 1942 -- (Nijssen & Isbrücker 1980:210 [ref. 6910], Ortega & Vari 1986:16 [ref. 9708], Burgess 1989:367 [ref. 12860], Isbrücker 2001:238 [ref. 26805], Reis in Reis et al. 2003:304 [ref. 27061], Shimabukuro-Dias et al. 2004:141 [ref. 27796], Ferraris 2007:126 [ref. 29155], Tencatt et al. 2013:258 [ref. 32752], Barriga Salazar 2014:111 [ref. 35745], Tencatt & Pavanelli 2015:294 [ref. 35434], Ottoni et al. 2016:133 [ref. 34756] as zigatus, Tencatt & Evers 2016:[12] [ref. 34387], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt et al. 2016:[18] [ref. 34388], DoNascimiento et al. 2017:73 [ref. 35633], Meza-Vargas et al. 2021:25 [ref. 39298]). •Valid as Osteogaster zygata (Eigenmann & Allen 1942) -- (Dias et al. 2024:24 [ref. 41219] as zygatus). Current status: Valid as Osteogaster zygata (Eigenmann & Allen 1942). Callichthyidae: Corydoradinae. Distribution: South America: Amazon River basin (Brazil, Colombia, Ecuador and Peru). Habitat: freshwater.