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

Species in the genus Megalamphodus: [ 19 ] records

bentosi, Hyphessobrycon Durbin [M. L.] in Eigenmann 1908:101 [Bulletin of the Museum of Comparative Zoology v. 52 (no. 6); ref. 1221] Amazon River at Obidos, Pará, Brazil. Syntypes: (21) CAS 42682 [ex IU 12654 & MCZ 20995] (3), MCZ 20842 (15), USNM 120270 [ex MCZ 20842a] (3). Type catalog: Vari & Howe 1991:26 [ref. 19022]. Author is M. L. Durbin. •Valid as Hyphessobrycon bentosi Durbin 1908 -- (Ortega & Vari 1986:8 [ref. 9708], Taphorn 1992:239 [ref. 23654], Weitzman & Palmer 1997:226 [ref. 22743], Weitzman & Palmer 1997:145 [ref. 24509], Weitzman & Palmer 1997:150 [ref. 24506], Lima & Malabarba in Reis et al. 2003:135 [ref. 27061], Hein 2009:9 [ref. 30362], García-Alzate et al. 2010:55 [ref. 30716], García-Alzate et al. 2011:709 [ref. 31266], Barriga Salazar 2014:107 [ref. 35745], Sarmiento et al. 2014:184 [ref. 35004], Zarske 2014:143 [ref. 33403], García-Alzate et al. 2015:222 [ref. 33855], Pastana & Ohara 2016:396 [ref. 34716], García-Alzate et al. 2017:125 [ref. 35253], Ohara et al. 2017:10 [ref. 35494], Pastana et al. 2017:13 [ref. 35596], DoNascimiento et al. 2017:49 [ref. 35633], Guimarães et al. 2018:82 [ref. 35965], Guimarães et al. 2020:106 [ref. 37899], Meza-Vargas et al. 2021:18 [ref. 39298], Chuctaya et al. 2022:21 [ref. 42137], Koerber et al. 2022:38 [ref. 39235] unconfirmed, Taphorn et al. 2022:16 [ref. 41297]). •Valid as Megalamphodus bentosi (Durbin 1908) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus bentosi (Durbin 1908). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Amazon River basin (Brazil, Ecuador, Bolivia, Guyana, Peru and Colombia). Habitat: freshwater.

callistus, Tetragonopterus Boulenger [G. A.] 1900:2 [Bollettino dei Musei di Zoologia ed Anatomia Comparata della R. Università di Torino v. 15 (no. 370); ref. 14722] Carandosiñho near Corumba, Rio Paraguay, Mato Grosso, Brazil. Syntypes: (numerous) BMNH 1900.4.14.63-68 (6), MSNG 37718 (2), MZUT 1365 (1). Type catalog: Tortonese 1940:138 [ref. 21559], Tortonese 1961:182 [ref. 10343]. •Valid as Hyphessobrycon callistus (Boulenger 1900) -- (Fernández & Butí 1996:252 [ref. 22775], Planquette et al. 1996:286 [ref. 22818], Almirón & Casciotta 1999:344 [ref. 24405], Lasso et al. 2001:95 [ref. 25928]). •Synonym of Hyphessobrycon eques (Steindachner 1882) -- (Weitzman & Palmer 1997:224 [ref. 22743], Weitzman & Palmer 1997:141 [ref. 24509], Britski et al. 1999:41 [ref. 24147], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], López et al. 2003:27 [ref. 27366], Casciotta et al. 2003:102 [ref. 28130], Hein 2009:2 [ref. 30362], Litz & Koerber 2014:15 [ref. 33622], Mirande & Koerber 2015:26 [ref. 35117], Koerber et al. 2017:41 [ref. 35267]). •Synonym of Megalamphodus eques (Steindachner 1882). Current status: Synonym of Megalamphodus eques (Steindachner 1882). Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

copelandi, Hyphessobrycon Durbin [M. L.] in Eigenmann 1908:101 [Bulletin of the Museum of Comparative Zoology v. 52 (no. 6); ref. 1221] Tabatinga, Amazonas, Brazil. Syntypes: (100) CAS 42683 [ex IU 12653] (5), MCZ 20771 (88), USNM 120271 [ex MCZ 20771] (6). Type catalog: Vari & Howe 1991:26 [ref. 19022]. Author is M. L. Durbin. •Valid as Hyphessobrycon copelandi Durbin 1908 -- (Ovchynnyk 1967:29 [ref. 37559], Géry et al. 1991:58 [ref. 21021], Chang & Ortega 1995:2 [ref. 24302], Planquette et al. 1996:288 [ref. 22818], Weitzman & Palmer 1997:226 [ref. 22743], Weitzman & Palmer 1997:145 [ref. 24509], Keith et al. 2000:13 [ref. 24547], Lima & Malabarba in Reis et al. 2003:135 [ref. 27061], Barriga Salazar 2014:107 [ref. 35745], Sarmiento et al. 2014:184 [ref. 35004], Melo et al. 2016:133 [ref. 34701], Ohara et al. 2017:10 [ref. 35494], Pastana et al. 2017:13 [ref. 35596], DoNascimiento et al. 2017:49 [ref. 35633], Guimarães et al. 2018:82 [ref. 35965], Guimarães et al. 2020:106 [ref. 37899], Meza-Vargas et al. 2021:18 [ref. 39298]). •Valid as Megalamphodus copelandi (Durbin 1908) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus copelandi (Durbin 1908). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Amazon River basin (Brazil, Ecuador, Colombia, Bolivia, Peru and French Guiana). Habitat: freshwater.

epicharis, Hyphessobrycon Weitzman [S. H.] & Palmer [L.] 1997:214, Figs. 1-4 [Ichthyological Exploration of Freshwaters v. 7 (no. 3); ref. 22743] Río Baria head waters, 3 kilometers downstream from Neblina base camp, Amazonas, Venezuela, 0°55'N, 66°10'W, elevation 120 meters. Holotype: MBUCV-V-20800. Paratypes: AMNH 59336-40 (6, 12, 18, 1, 110); ANSP 167762 (25); CAS 75430 (55); FMNH 100609 (25); MBUCV-V 20801-02 (7, 220); MCZ 56849 (72); MHNG 2516.56 (55); MZUSP 27792 (2), 42379 (55); UMMZ 218698 (110); USNM 272354 (283), 272358 (4), 272362 (172), 315611 (6). Type catalog: Provenzano et al. 1998:11 [ref. 24196]. •Valid as Hyphessobrycon epicharis Weitzman & Palmer 1997 -- (Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], Hein 2009:3 [ref. 30362], García-Alzate et al. 2017:125 [ref. 35253], DoNascimiento et al. 2017:50 [ref. 35633], Guimarães et al. 2020:106 [ref. 37899]). •Valid as Megalamphodus epicharis (Weitzman & Palmer 1997) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus epicharis (Weitzman & Palmer 1997). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Amazon River basin, Brazil, Venezuela and Colombia. Habitat: freshwater.

eques, Chirodon Steindachner [F.] 1882:179 [Anzeiger der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftlichen Klasse v. 19 (no. 19); ref. 20487] Villa Bella and Obidos, Amazon River, Brazil. Lectotype: NMW 95056. Paralectotypes: (several) NMW 59810 (2), 62693 (6). Original genus should have been Cheirodon. Species later described in more detail in Steindachner 1882:37 [ref. 14353]. Guimarães et al. 2020:106 [ref. 37899] list a lectotype. •Valid as Hyphessobrycon eques (Steindachner 1882) -- (Weitzman & Palmer 1997:224 [ref. 22743], Weitzman & Palmer 1997:140 [ref. 24509], Britski et al. 1999:41 [ref. 24147], López et al. 2002:27 [ref. 27366], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], Casciotta et al. 2003:102 [ref. 28130], Menni 2004:77 [ref. 28131], Almirón et al. 2004:674 [ref. 27987], Almirón et al. 2006:895 [ref. 29163], Hein 2009:2 [ref. 30362], Mirande 2010:510 [ref. 31006], Sarmiento et al. 2014:47, 184 [ref. 35004], Litz & Koerber 2014:15 [ref. 33622], Bragança et al. 2015:260 [ref. 34051], Mirande & Koerber 2015:26 [ref. 35117], Pastana & Ohara 2016:396 [ref. 34716], Bertaco et al. 2016:413 [ref. 34561], Nión et al. 2016:30 [ref. 35565], Koerber et al. 2017:41 [ref. 35267], Ohara et al. 2017:10 [ref. 35494], Pastana et al. 2017:13 [ref. 35596], DoNascimiento et al. 2017:[9] [ref. 35679], Guimarães et al. 2018:82 [ref. 35965], Guimarães et al. 2019:351 [ref. 36774], Azevedo-Santos et al. 2020:5 [ref. 39606], Guimarães et al. 2020:106 [ref. 37899], dos Reis et al. 2020:459 [ref. 38364], Meza-Vargas et al. 2021:18 [ref. 39298], Chuctaya et al. 2022:21 [ref. 42137], Loureiro et al. 2023:78 [ref. 40506], Kampfert et al. 2025:281 [ref. 42023]). •Valid as Megalamphodus eques (Steindachner 1882) -- (Koerber et al. 2024:2 [ref. 41721], Melo et al. 2024:21 [ref. 41541], Bertaco et al. 2025:2 [ref. 42492]). Current status: Valid as Megalamphodus eques (Steindachner 1882). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Amazon and Guaporé River basins (Argentina, Brazil, Bolivia, Paraguay, Peru and Uruguay). Introduced in French Guiana and other regions in Brazil. Habitat: freshwater.

erythrostigma, Hemigrammus Fowler [H. W.] 1943:33, Fig. [The Fish Culturist v. 22 (no. 5); ref. 17878] Probably border area between Peru and Brazil. Holotype (unique): ANSP 70208. Type catalog: Böhlke 1984:45 [ref. 13621]. •Valid as Hyphessobrycon erythrostigma (Fowler 1943) -- (Ortega & Vari 1986:8 [ref. 9708], Weitzman & Palmer 1997:234 [ref. 22743] with comment on type locality, Zarske & Géry 1997:310 [ref. 23715], Weitzman & Palmer 1997:167 [ref. 24507], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], Bertaco & Malabarba 2005:87 [ref. 28297], Miquelarena & López 2006:824 [ref. 29070], Bertaco et al. 2007:248 [ref. 29277], Hein 2009:3 [ref. 30362], García-Alzate et al. 2010:55 [ref. 30716], García-Alzate et al. 2011:709 [ref. 31266], Barriga Salazar 2014:107 [ref. 35745], García-Alzate et al. 2015:223 [ref. 33855], Pastana et al. 2017:13 [ref. 35596], DoNascimiento et al. 2017:50 [ref. 35633], Guimarães et al. 2020:106 [ref. 37899], Meza-Vargas et al. 2021:18 [ref. 39298], Chuctaya et al. 2022:21 [ref. 42137]). •Valid as Megalamphodus erythrostigma (Fowler 1943) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus erythrostigma (Fowler 1943). Acestrorhamphidae: Megalamphodinae. Distribution: South America: upper Amazon River basin (Brazil, Ecuador, Colombia and Peru). Habitat: freshwater.

haraldschultzi, Hyphessobrycon Travassos [H.] 1960:5, Fig. 1 [Tropical Fish Hobbyist v. 8 (no. 6); ref. 11956] Ilha do Bananal, Goiaz, Brazil. Holotype: MNRJ 9207. Paratypes: MNRJ 9208-09 (2, c&s), 9210-11 (9, 33); USNM 179749 (39 of 41). Type catalog: Vari & Howe 1991:27 [ref. 19022]. •Valid as Hyphessobrycon haraldschultzi Travassos 1960 -- (Weitzman & Palmer 1997:235 [ref. 22743], Lima & Malabarba in Reis et al. 2003:137 [ref. 27061], Bertaco & Malabarba 2005:87 [ref. 28297], Hein 2009:9 [ref. 30362], Pastana et al. 2017:13 [ref. 35596], Guimarães et al. 2018:82 [ref. 35965], Guimarães et al. 2020:106 [ref. 37899]). •Valid as Megalamphodus haraldschultzi (Travassos 1960) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus haraldschultzi (Travassos 1960). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Araguaia River drainage, Tocantins State, Brazil. Habitat: freshwater.

khardinae, Hyphessobrycon Zarske [A.] 2008:6, Figs. 1-6 [Vertebrate Zoology v. 58 (no. 1); ref. 29615] Surroundings of Lago Cassianá, Tapaua, rio Itaparanga, Amazonas, Brazil. Holotype: MZUSP 98667 [lost?]. Paratypes: MTD F31212-13 (2); NMW 95128 (1); ZMN 33796 (1), Géry coll. (3). •Valid as Hyphessobrycon khardinae Zarske 2008 -- (Lima et al. 2024:193 [ref. 40817]). •Valid as Megalamphodus khardinae (Zarske 2008) -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus khardinae (Zarske 2008). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Itaparanga River drainage, Amazonas, Brazil. Habitat: freshwater.

megalopterus, Megalamphodus Eigenmann [C. H.] 1915:50, Fig. 14; Pl. 7 [Memoirs of the Carnegie Museum v. 7 (no. 1); ref. 1231] Cáceres, Mato Grosso, Brazil. Holotype: FMNH 57823 [ex CM 6806]. Paratypes: CAS 78887 [ex IU 1362, 14333] (?, missing), FMNH 57824 [ex CM 6807a-b] (orig. 3, now 2). Type catalog: Henn 1928:59 [ref. 12305], Ibarra & Stewart 1987:55 [ref. 12367]. Species as melanopterus in caption to Fig. 14 (regarded as in error), elsewhere (3 times) as megalopterus. •Valid as Hyphessobrycon megalopterus (Eigenmann 1915) -- (Weitzman & Palmer 1997:231 [ref. 22743] with comment on locality, Lima & Gerhard 2001:112 [ref. 25355], Lima & Malabarba in Reis et al. 2003:138 [ref. 27061], Malabarba et al. 2012:57 [ref. 31810], Sarmiento et al. 2014:184 [ref. 35004], Ohara et al. 2017:10 [ref. 35494], Pastana et al. 2017:13 [ref. 35596]). •Valid as Megalamphodus megalopterus Eigenmann 1915 -- (Britski et al. 1999:44 [ref. 24147], Lasso et al. 2001:96 [ref. 25928], Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus megalopterus Eigenmann 1915. Acestrorhamphidae: Megalamphodinae. Distribution: South America: upper Paraguay and Guaporé River basins, Bolivia and Brazil. Habitat: freshwater.

melasopterus, Hemigrammus Eigenmann [C. H.] & Kennedy [C. H.] 1903:518 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 55; ref. 1260] Aguada, near Arroyo Trementina, Paraguay. Holotype: CAS 44381 [ex IU 10039]. Paratypes: (6) AMNH 1035 (1), CAS 44382 [ex IU 10040] (1), CAS [ex IU 10041] (orig. 5, not found); FMNH 52668 (2); ZMB 17147 (2). The spelling melasopterus possibly in error for melanopterus. •Synonym of Hyphessobrycon eques (Steindachner 1882) -- (Weitzman & Palmer 1997:224 [ref. 22743], Weitzman & Palmer 1997:148 [ref. 24509], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], Litz & Koerber 2014:15 [ref. 33622], Mirande & Koerber 2015:26 [ref. 35117], Koerber et al. 2017:41 [ref. 35267]). •Synonym of Megalamphodus eques (Steindachner 1882). Current status: Synonym of Megalamphodus eques (Steindachner 1882). Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

micropterus, Megalamphodus Eigenmann [C. H.] 1915:54, Fig. 16; Pl. 8 (fig. 1) [Memoirs of the Carnegie Museum v. 7 (no. 1); ref. 1231] Rio São Francisco at Lagoa do Porto, Brazil. Holotype: FMNH 57916 [ex CM 6900a]. Paratypes: (62) CAS [ex IU 14122; CM 6901] (3, missing), CAS 98918 [ex IU 14123; CM 6903] (6), FMNH 57917-20 (14, 9, 25, 1), CAS-SU 17514 [ex CM 6903] (5). Type catalog: Henn 1928:59 [ref. 12305], Böhlke 1953:25 [ref. 12291], Ibarra & Stewart 1987:55 [ref. 12367]. •Valid as Hyphessobrycon micropterus (Eigenmann 1915) -- (Weitzman & Palmer 1997:232 [ref. 22743], Lima & Gerhard 2001:110 [ref. 25355], Lima & Malabarba in Reis et al. 2003:138 [ref. 27061], Zanata & Camelier 2010:776 [ref. 31077], Dagosta et al. 2014:373 [ref. 33382], Bragança et al. 2015:260 [ref. 34051], Pastana et al. 2017:13 [ref. 35596], Zanata et al. 2018:[11] [ref. 35863], Guimarães et al. 2018:82 [ref. 35965], Guimarães et al. 2019:354 [ref. 36774], Silva et al. 2020:6 [ref. 37809], Guimarães et al. 2020:106 [ref. 37899], Lima et al. 2021:347 [ref. 38293], Vieira-Guimarães et al. 2024:38 [ref. 41258]). •Valid as Megalamphodus micropterus Eigenmann 1915 -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus micropterus Eigenmann 1915. Acestrorhamphidae: Megalamphodinae. Distribution: South America: São Francisco River basin (Brazil). Habitat: freshwater.

ornatus, Hyphessobrycon Ahl [E.] 1934:238, Figs. [Sitzungsberichte der Gesellschaft Naturforschender Freunde zu Berlin 1934 (nos 4-7); ref. 16409] Pará, Brazil [probably in error for Guyana]. Syntypes: ZMB 20781 (1 or 3), 20805 (7). Types mentioned: Zarske & Géry 1995:103 [ref. 22674]. •Synonym of Hyphessobrycon bentosi Durbin 1907 -- (Zarske & Géry 1995:119 [ref. 22674]). •Synonym of Hyphessobrycon rosaceus Durbin 1909 -- (Weitzman & Palmer 1997:229 [ref. 22743] with comment on locality, Weitzman & Palmer 1997:153 [ref. 24506], Weitzman & Palmer 1997:163 [ref. 24508], Lima & Malabarba in Reis et al. 2003:139 [ref. 27061]). •Synonym of Megalamphodus rosaceus (Durbin 1909). Current status: Synonym of Megalamphodus rosaceus (Durbin 1909). Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

robertsi, Hyphessobrycon Anonymous [Axelrod [H. R.]] 1958:76 [Tropical Fish Hobbyist v. 7 (no. 2); ref. 22778] Not available as above, no distinguishing features provided; as pointed out by Weitzman & Palmer 1997:226 [ref. 22743] and Weitzman & Palmer 1997:153 [ref. 24506], "Numerous subsequent references to H. robertsi in the aquarium literature appear to refer to H. bentosi and may have made the name H. robertsi available." See Zarske & Géry 1997:310 [ref. 23715]. •In the synonymy Hyphessobrycon bentosi Durbin 1908 -- (Lima & Malabarba in Reis et al. 2003:135 [ref. 27061]). •Unavailable name -- (Toledo-Piza et al. 2024:443 [ref. 40817]). •In the synonymy of Megalamphodus bentosi (Durbin 1908). Nomen Nudum. Current status: Synonym of Megalamphodus bentosi (Durbin 1908). Acestrorhamphidae: Megalamphodinae.

rogoaguae, Megalamphodus Pearson [N. E.] 1924:33, Pl. 10 (fig. 3) [Indiana University Studies v. 11 (no. 64); ref. 3396] Lagoons, Lake Rogoagua, Beni, Bolivia (ca. 13°58'S, 66°53'W). Holotype (unique): CAS 98917 [ex IU 17348]. •Valid as Megalamphodus rogoaguae Pearson 1924 -- (Géry et al. 1991:61 [ref. 21021]). •Synonym of Hyphessobrycon megalopterus (Eigenmann 1915) -- (Weitzman & Palmer 1997:231 [ref. 22743], Lima & Malabarba in Reis et al. 2003:138 [ref. 27061], Sarmiento et al. 2014:47 [ref. 35004]). •Synonym of Megalamphodus megalopterus Eigenmann 1915. Current status: Synonym of Megalamphodus megalopterus Eigenmann 1915. Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

rosaceus, Hyphessobrycon Durbin [M. L.] 1909:67 [Annals of the Carnegie Museum v. 6 (no. 1); ref. 1166] Gluck Island, Essequibo River, Guyana (a river island at about 6°00' to 6°05'N, 58°36'W). Holotype: FMNH 52791 [ex CM 1190]. Paratypes: (26) BMNH 1911.10.31.410-411 (2); CAS 61755 [IU 11768] (4); FMNH 7352 (2), 52792-94 (5, 1, 2); MVZ [=MCZ] 30038 (2); CAS-SU 21919 (2); USNM 66194 [ex CM] (2); ZMA 101013 (1). Type catalog: Henn 1928:66 [ref. 12305], Böhlke 1953:24-25 [ref. 12291], Nijssen et al. 1982:20 [ref. 19236], Ibarra & Stewart 1987:48 [ref. 12367], Vari & Howe 1991:27 [ref. 19022]. •Valid as Hyphessobrycon rosaceus Durbin 1909 -- (Weitzman & Palmer 1997:229 [ref. 22743], Weitzman & Palmer 1997:145 [ref. 24509], Weitzman & Palmer 1997:153 [ref. 24506], Weitzman & Palmer 1997:158 [ref. 24508], Lima & Malabarba in Reis et al. 2003:139-140 [ref. 27061], Hein 2009:9 [ref. 30362], Pastana et al. 2017:13 [ref. 35596], Guimarães et al. 2020:106 [ref. 37899], Chuctaya et al. 2022:22 [ref. 42137], Taphorn et al. 2022:16 [ref. 41297]). •Valid as Megalamphodus rosaceus (Durbin 1909)-- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus rosaceus (Durbin 1909). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Essequibo, Corantijn and Suriname River basins (Guyana and Suriname). IUCN (2023): Least Concern, as Hyphessobrycon rosaceus. Habitat: freshwater.

rubrostigma, Hyphessobrycon Hoedeman [J. J.] 1956:312, Fig. [Die Aquarien- und Terrarienzeitschrift (DATZ) v. 9 (no. 12); ref. 12199] Colombia ?, exact locality unknown. Holotype: ZMA 101935a. Paratypes: ZMA 101935b (6). Type catalog: Nijssen et al. 1982:20 [ref. 19236]. •Synonym of Hyphessobrycon erythrostigma (Fowler 1943) -- (Weitzman & Palmer 1997:234 [ref. 22743], Weitzman & Palmer 1997:167 [ref. 24507], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061]). •Synonym of Megalamphodus erythrostigma (Fowler 1943). Current status: Synonym of Megalamphodus erythrostigma (Fowler 1943). Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

serpae, Hyphessobrycon Durbin [M. L.] in Eigenmann 1908:100 [Bulletin of the Museum of Comparative Zoology v. 52 (no. 6); ref. 1221] Serpa (= Amazon River at Itacoatiara), Amazonas, Brazil. Syntypes: (46) CAS 42684 [ex IU 12652 & MCZ 20985] (5), MCZ 20985 (now 34), USNM 120269 [ex MCZ 20985] (6). Type catalog: Vari & Howe 1991:27 [ref. 19022]. Author is M. L. Durbin. •Valid as Hyphessobrycon serpae Durbin 1908 -- (Chang & Ortega 1995:2 [ref. 24302]). •Valid as Hyphessobyson cf. serpae Durbin 1908 -- (Fuller et al. 1999:184 [ref. 25838]). •Synonym of Hyphessobrycon eques (Steindachner 1882) -- (Weitzman & Palmer 1997:148 [ref. 24509], Britski et al. 1999:41 [ref. 24147], Lima & Malabarba in Reis et al. 2003:136 [ref. 27061], Casciotta et al. 2003:102 [ref. 28130], Litz & Koerber 2014:15 [ref. 33622], Mirande & Koerber 2015:26 [ref. 35117], Koerber et al. 2017:41 [ref. 35267]). •Synonym of Megalamphodus eques (Steindachner 1882). Current status: Synonym of Megalamphodus eques (Steindachner 1882). Acestrorhamphidae: Megalamphodinae. Habitat: freshwater.

socolofi, Hyphessobrycon Weitzman [S. H.] 1977:327, Figs. 1-3 [Proceedings of the Biological Society of Washington v. 90 (no. 2); ref. 7294] Barcelos, 0°58'S, 62°57'W, Rio Negro, Amazonas, Brazil. Holotype: MZUSP 13181. Paratypes: BMNH 1977.1.19.1-2 (2), MZUSP 13182-83 (2), USNM 216612 (5). Type catalog: Vari & Howe 1991:27 [ref. 19022], Oyakawa 1996:470 [ref. 23140]. •Valid as Hyphessobrycon socolofi Weitzman 1977 -- (Weitzman & Palmer 1997:236 [ref. 22743], Zarske & Géry 1997:310 [ref. 23715], Weitzman & Palmer 1997:168 [ref. 24507], Lima & Malabarba in Reis et al. 2003:140 [ref. 27061], Bertaco & Malabarba 2005:87 [ref. 28297], Miquelarena & López 2006:824 [ref. 29070], Bertaco et al. 2007:248 [ref. 29277], Hein 2009:9 [ref. 30362], Mirande 2010:510 [ref. 31006], Pastana et al. 2017:13 [ref. 35596], Guimarães et al. 2020:106 [ref. 37899]). •Valid as Megalamphodus socolofi (Weitzman 1977)-- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus socolofi (Weitzman 1977). Acestrorhamphidae: Megalamphodinae. Distribution: South America: Negro River basin, Amazonas, Brazil. Habitat: freshwater.

sweglesi, Megalamphodus Géry [J.] 1961:36, Fig. 7 [Tropical Fish Hobbyist v. 9 (no. 9, May); ref. 9352] Corrected to River Muco, upper Río Orinoco basin, Colombia. Holotype: USNM 196090. Paratypes: Géry coll. M. 1142 (1). Type catalog and locality information: Vari & Howe 1991:29 [ref. 19022]. See Taphorn 1992:239 [ref. 23654]. •Valid as Hyphessobrycon sweglesi (Géry 1961) -- (Weitzman & Palmer 1997:235 [ref. 22743], Lima & Malabarba in Reis et al. 2003:140 [ref. 27061], García-Alzate et al. 2010:55 [ref. 30716], García-Alzate et al. 2011:709 [ref. 31266], Zarske 2014:158 [ref. 33403], García-Alzate et al. 2015:223 [ref. 33855], García-Alzate et al. 2017:125 [ref. 35253], Ohara et al. 2017:10 [ref. 35494], Pastana et al. 2017:13 [ref. 35596], DoNascimiento et al. 2017:51 [ref. 35633], Urbano-Bonilla et al. 2018:86 [ref. 35773], Guimarães et al. 2018:83 [ref. 35965], Cortés Hernández et al. 2023:455 [ref. 40760]). •Valid as Megalamphodus sweglesi Géry 1961 -- (Melo et al. 2024:21 [ref. 41541]). Current status: Valid as Megalamphodus sweglesi Géry 1961. Acestrorhamphidae: Megalamphodinae. Distribution: South America: Orinoco River basin (Colombia and Peru). Habitat: freshwater.