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 Rhamphichthyidae: [ 36 ] records

apurensis, Gymnorhamphichthys Fernández-Yépez [A.] 1968:[5], Pl. 4 (unnumb.) [Evencias No. 20; ref. 7318] Río Bucaral, Paso Don Pancho, tributary of Río Apure, Orinoco basin, Estado Apure, Venezuela. Holotype: MBUCV-V-10838 [ex AFY 51169]. Paratypes: MBUCV-V-10839 [ex AFY 51079] (1); AFY 51045 (1), 51251 (1). Type catalog: Provenzano et al. 1998:10 [ref. 24196], Ferraris et al. 2017:[28] [ref. 35236]. On fifth unnumbered page; genus spelled Gymnorhamphicthys on plate. Immature Gymnorhamphichthys -- (Schwassmann 1989:157 [ref. 13745]). •Valid as Rhamphichthys apurensis (Fernández-Yépez 1968) -- (Mago-Leccia 1994:42 [ref. 21320], Triques 1999:1 [ref. 24281], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:492 [ref. 27061], Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Urbano-Bonilla et al. 2018:73 [ref. 35773], Lasso et al. in Lasso & Morales-Betancourt 2022:98 [ref. 40783], Taphorn et al. 2022:40 [ref. 41297], Carvalho & Albert 2023:11 [ref. 40654]). Current status: Valid as Rhamphichthys apurensis (Fernández-Yépez 1968). Rhamphichthyidae. Distribution: South America: Orinoco River basin and Cuyuni River drainage (Venezuela, Colombia and Guyana). Habitat: freshwater.

atlanticus, Rhamphichthys Triques [M. L.] 1999:3, Fig. 4 [Revue française d'Aquariologie Herpétologie v. 26 (no. 1/2); ref. 24281] Viana Lake, Pindaré-Mearim river system, Maranhão, Brazil, about 3°14'S, 45°01'W. Holotype: MZUSP 43612. Paratypes: MZUSP 48508 (1). Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys atlanticus Triques 1999 -- (Ferraris in Reis et al. 2003:492 [ref. 27061], Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236], Koerber et al. 2022:44 [ref. 39235], Vieira et al. 2023:19 [ref. 40759], Limeira-Filho et al. 2024:6 [ref. 41573]). •Synonym of Rhamphichthys pantherinus Castelnau 1855 -- (Carvalho & Albert 2023:44 [ref. 40654]). Current status: Synonym of Rhamphichthys pantherinus Castelnau 1855. Rhamphichthyidae. Habitat: freshwater.

benoneae, Hypopygus Peixoto [L. A. W.], Dutra [G. M.], de Santana [C. D.] & Wosiacki [W. B.] 2013:232, Fig. 1 [Copeia 2013 (no. 2); ref. 32780] Pará, Melgaço, tributary of Igarapé Açú, lower Rio Anapu drainage, 1°48'15.4"S, 51°28'32.2"W, Brazil. Holotype: MPEG 23603. Paratypes: INPA, MPEG, MZUSP, USNM. Type catalog: Ferraris et al. 2017:[26] [ref. 35236]. •Valid as Hypopygus benoneae Peixoto, Dutra, de Santana & Wosiacki 2013 -- (Ferraris et al. 2017:[26] [ref. 35236]). Current status: Valid as Hypopygus benoneae Peixoto, Dutra, de Santana & Wosiacki 2013. Rhamphichthyidae. Distribution: Amazon River drainage, Brazil. Habitat: freshwater.

blochii, Rhamphichthys Kaup [J. J.] 1857:133, Fig. 9 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] No locality. No types known. Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. •Questionably a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Mago-Leccia 1994:41 [ref. 21320], Ferraris in Reis et al. 2003:493 [ref. 27061]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Albert 2001:124 [ref. 25614], Ferraris et al. 2017:[29] [ref. 35236], Carvalho & Albert 2023:55 [ref. 40654]). Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.

bogardusi, Gymnorhamphichthys Lundberg [J. G.] 2005:2, Figs. 1, 2B [Notulae Naturae (Philadelphia) No. 479; ref. 29334] 114 nautical miles from sea buoy, in Boca Grande navigation channel, 8°36'N, 61°45'W, Río Orinoco, Delta Amacuro State, Venezuela. Holotype: MBUCV-V-32800. Paratypes: ANSP 180964 (4), FMNH 117081 (1), USNM 384385 (1). Plus non-type material. Type catalog: Ferraris et al. 2017:[26] [ref. 35236]. Appeared originally as bogardusi, but named for Mrs. Joan Bogardus Spears, the correct species epithet would be bogardusae, not to be corrected according to the ICZN. •Valid as Gymnorhamphichthys bogardusi Lundberg 2005 -- (Carvalho et al. 2011:400 [ref. 31553], Ferraris et al. 2017:[26] [ref. 35236] as bogardusae, Lasso et al. in Lasso & Morales-Betancourt 2022:92 [ref. 40783], Taphorn et al. 2022:40 [ref. 41297]). Current status: Valid as Gymnorhamphichthys bogardusi Lundberg 2005. Rhamphichthyidae. Distribution: South America: mainstream of Orinoco River and its tributaries draining the Venezuelan llanos (Guyana and Venezuela). Habitat: freshwater.

britskii, Gymnorhamphichthys Carvalho [T. P.], Ramos [C. S.] & Albert [J. S.] 2011:401, Figs. 1, 3A [Copeia 2011 (no. 3); ref. 31553] Córrego Embaúba, tributary to Río Cuiabá, 14°55'S, 56°27'W, Rosário Oeste, Mato Grosso, Brazil. Holotype: MZUSP 106814. Paratypes: many at FMNH, MCP, MUSM, MZUSP, NUP, UFRGS. Plus non-type specimens. Type catalog: Ferraris et al. 2017:[26] [ref. 35236], Oliveira et al. 2022:10 [ref. 39255]. •Valid as Gymnorhamphichthys britskii Carvalho, Ramos & Albert 2011 -- (Koerber 2014:10 [ref. 33621], Mirande & Koerber 2015:47 [ref. 35117], Ferraris et al. 2017:[26] [ref. 35236], Koerber et al. 2017:69 [ref. 35267], Reis et al. 2020:463 [ref. 38364]). Current status: Valid as Gymnorhamphichthys britskii Carvalho, Ramos & Albert 2011. Rhamphichthyidae. Distribution: South America: Rio de La Plata system (Argentina, Brazil and Paraguay). Habitat: freshwater.

caiana, Iracema Triques [M. L.] 1996:91, Fig. 1 [Revue française d'Aquariologie Herpétologie v. 23 (no. 3/4); ref. 22916] Jauaperi River, beach about 40-50 kilometers above its mouth on the Rio Negro, about 1°05'S, 61°35'W, Amazonas/Roraima border, Brazil. Holotype: MZUSP 8952. Paratypes: MZUSP 49205 (3). Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Iracema caiana Triques 1996 -- (Albert & Campos-da-Paz 1998:423 [ref. 23853], Ferraris in Reis et al. 2003:492 [ref. 27061], Carvalho & Albert 2011:459 [ref. 31514], Ferraris et al. 2017:[27] [ref. 35236]). Current status: Valid as Iracema caiana Triques 1996. Rhamphichthyidae. Distribution: Jauaperi River in Negro River drainage, Amazon basin, Brazil. Habitat: freshwater.

cryptogenes, Stegostenopos Triques [M. L.] 1997:33, Fig. 5 [Revue française d'Aquariologie Herpétologie v. 24 (no. 1/2); ref. 22930] Igarapé (creek) Sirinau, right margin of River Cuieiras, about 25 kilometers from its mouth on River Negro, about 2°70'S, 60°40'W, Brazil. Holotype: MZUSP 47985. Paratypes: MZUSP 47986 (12), 47991 (1). Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •In Steatogenys -- (Albert & Campos-da-Paz 1998:426 [ref. 23853]). •Valid as Stegostenopos cryptogenes Triques 1997 -- (Albert & Crampton in Reis et al. 2003:496 [ref. 27061], DoNascimiento 2016:540 [ref. 34727]). •Valid as Hypopygus cryptogenes (Triques 1997) -- (de Santana & Crampton 2011:1122 [ref. 31643], Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236], see DoNascimiento et al. 2017:[14] [ref. 35679], Campos-da-Paz 2018:198 [ref. 35891]). Current status: Valid as Hypopygus cryptogenes (Triques 1997). Rhamphichthyidae. Distribution: Rio Negro, Rio Preto and Rio Preto da Eva drainages, Amazon basin, Brazil and ? Venezuela. Habitat: freshwater.

drepanium, Rhamphichthys Triques [M. L.] 1999:1, Figs. 1-3 [Revue française d'Aquariologie Herpétologie v. 26 (no. 1/2); ref. 24281] Janauari Lake, at confluence of Rio Negro and Rio Solimões, Manaus County, Amazonas, Brazil, about 3°20'S, 60°12'W. Holotype: MZUSP 6893. Paratypes: MZUSP 48509 (2), USNM 306876 (1). Plus additional non-type material. Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys drepanium Triques 1999 -- (Ferraris in Reis et al. 2003:493 [ref. 27061], Carvalho et al. 2011:405 [ref. 31553], Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Lasso et al. in Lasso & Morales-Betancourt 2022:100 [ref. 40783], Carvalho & Albert 2023:18 [ref. 40654]). Current status: Valid as Rhamphichthys drepanium Triques 1999. Rhamphichthyidae. Distribution: South America: Amazon and Orinoco River basins (Bolivia, Brazil, Colombia and Venezuela). Habitat: freshwater.

duidae, Tateichthys LaMonte [F. R.] 1929:1, Fig. 1 [American Museum Novitates No. 373; ref. 3039] Burned Mountain Creek, about 5 miles northeast of Caño Pescado, Mt. Duida neighborhood, Venezuela. Holotype: AMNH 9599. Paratypes: AMNH 9600 (3), 33993 (1). Type catalog: Ferraris et al. 2017:[29] [ref. 35236]. •Valid as Brachyhypopomus duidae (LaMonte 1929) -- (Mago-Leccia 1994:50 [ref. 21320]). •Valid as Steatogenys duidae (LaMonte 1929) -- (Schwassmann 1984:106 [ref. 5345], Albert & Crampton in Reis et al. 2003:495 [ref. 27061], Crampton et al. 2004:78 [ref. 27504], de Santana & Crampton 2011:1155 [ref. 31643], Ferraris et al. 2017:[29] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Meza-Vargas et al. 2021:21 [ref. 39298]). Current status: Valid as Steatogenys duidae (LaMonte 1929). Rhamphichthyidae. Distribution: South America: Orinoco and Amazon basins (Brazil, Colombia, Peru and Venezuela). Habitat: freshwater.

elegans, Rhamphichthys (Brachyrhamphichthys) Steindachner [F.] 1880:89 [37] [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 42; ref. 14403] Mouth of the Rio Negro, Brazil. Syntypes: NMW 76413 (2). Type catalog: Ferraris et al. 2017:[29] [ref. 35236]. Specimen on Pl. 9 (figs. 1-1a) is named Rhamphichthys (Brachyrhamphichthys) mirabilis in figure caption, a taxon not discussed in the text; evidently a mistake or unintentional naming for Rhamphichthys (Brachyrhamphichthys) elegans treated on p. 37 in the text. •Valid as Brachyhypopomus elegans (Steindachner 1880) -- (Mago-Leccia 1994:49 [ref. 21320]). •Valid as Steatogenys elegans (Steindachner 1880) -- (Schwassmann 1984:105 [ref. 5345], Ortega & Vari 1986:13 [ref. 9708], Albert & Campos-da-Paz 1998:423 [ref. 23853], Albert & Crampton in Reis et al. 2003:496 [ref. 27061], Crampton et al. 2004:78 [ref. 27504], Barriga Salazar 2014:116 [ref. 35745], Melo et al. 2016:134 [ref. 34701], Ferraris et al. 2017:[29] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Ochoa et al. 2020:64 [ref. 37781], Meza-Vargas et al. 2021:21 [ref. 39298], Lasso et al. in Lasso & Morales-Betancourt 2022:102 [ref. 40783], Taphorn et al. 2022:40 [ref. 41297], Torgersen et al. 2023:781 [ref. 40692]). Current status: Valid as Steatogenys elegans (Steindachner 1880). Rhamphichthyidae. Distribution: South America: Amazon and Orinoco river basins (Bolivia, Brazil, Colombia, Ecuador,Guyana, Peru and Venezuela). Habitat: freshwater.

hahni, Sternarchorhamphus Meinken [H.] 1937:79, Fig. 3 [Blätter für Aquarien- und Terrarienkunde v. 48 (no. 4); ref. 15288] Río Paranà basin, near Corrientes, Argentina. Holotype (unique): ZMB 31367. Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Sternarchorhamphus hahni Meinken 1937 -- (Mago-Leccia 1994:36 [ref. 21320]). •Valid as Rhamphichthys hahni (Meinken 1937) -- (Campos-da-Paz & Paepke 1994:155 [ref. 21383], Campos-da-Paz 1995:34 [ref. 22512], Britski et al. 1999:86 [ref. 24147], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:493 [ref. 27061], López et al. 2003:65 [ref. 27366], Casciotta et al. 2003:142 [ref. 28130], Menni 2004:84 [ref. 28131], Carvalho et al. 2011:405 [ref. 31553], Litz & Koerber 2014:28 [ref. 33622], Carvalho & Albert 2015:40 [ref. 33681], Mirande & Koerber 2015:47 [ref. 35117], Bertaco et al. 2016:422 [ref. 34561], Vera-Alcaraz et al. 2017:6 [ref. 35082], Ferraris et al. 2017:[28] [ref. 35236], Koerber et al. 2017:69 [ref. 35267], Reis et al. 2020:463 [ref. 38364], Loureiro et al. 2023:82 [ref. 40506] as hani, Carvalho & Albert 2023:28 [ref. 40654]). Current status: Valid as Rhamphichthys hahni (Meinken 1937). Rhamphichthyidae. Distribution: South America: Paraná-Paraguay River basin, Argentina, Brazil, Paraguay and Uruguay. Habitat: freshwater.

heleios, Rhamphichthys Carvalho [T. P.] & Albert [J. S.] 2015:35, Figs. 1-3, 4A, 5A, 7A [Copeia v. 103 (no. 1); ref. 33681] Amazonas, Iranduba, confluence of Rio Negro and Solimões at Costa do Catalão, Brazil, 3°09'S, 59°54'W. Holotype: INPA 42309. Paratypes: ANSP, INPA, MCP, MZUSP. Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys heleios Carvalho & Albert 2015 -- (Ferraris et al. 2017:[28] [ref. 35236], Carvalho & Albert 2023:35 [ref. 40654]). Current status: Valid as Rhamphichthys heleios Carvalho & Albert 2015. Rhamphichthyidae. Distribution: South America: Solimões and Amazon Rivers in Brazil upstream of the mouth of the Madeira River and, Guaporé River drainage, Amazon basin, Brazil. Habitat: freshwater.

hoedemani, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1125, Fig. 19 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Igarapé Toari, Rio Preto de Eva drainage, 2°47'35"S, 59°38'21"W, Amazonas, Brazil. Holotype: INPA 30375. Paratypes: many at INPA and MZUSP. Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus hoedemani de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236]). Current status: Valid as Hypopygus hoedemani de Santana & Crampton 2011. Rhamphichthyidae. Distribution: Rio Negro and Rio Preto da Eva drainages, Amazon basin, Brazil. Habitat: freshwater.

hypostomus, Gymnorhamphichthys Ellis [M. M.] in Eigenmann 1912:436 [Memoirs of the Carnegie Museum v. 5 (no. 1); ref. 1227] San Joaquín, Bolivia. Holotype: FMNH 54554 [ex CM 3182]. Paratypes: ?FMNH [ex CM 3183a] (1). Additional original material: CAS 31183 [ex IU 12613] (2), CAS 31184-85 [ex IU 12641-42] (2, 1); FMNH 54555-57 (1, 2, 1). Type catalog: Henn 1928:70 [ref. 12305], Ibarra & Stewart 1987:42 [ref. 12367], Ferraris et al. 2017:[26] [ref. 35236]. Also appeared in Ellis 1913:139, Pl. 23 (fig. 2) [ref. 1271]. No longer known from Argentina -- Koerber 2012:10 [ref. 32229]. •Valid as Gymnorhamphichthys hypostomus Ellis 1912 -- (Schwassmann 1989:166 [ref. 13745], Mago-Leccia 1994:42 [ref. 21320], Chang & Ortega 1995:3 [ref. 24302], Albert & Campos-da-Paz 1998:423 [ref. 23853], Britski et al. 1999:87 [ref. 24147], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:492 [ref. 27061], López et al. 2003:65 [ref. 27366], Menni 2004:84 [ref. 28131], Lundberg 2005:2 [ref. 20334], Carvalho et al. 2011:400 [ref. 31553], de Santana & Crampton 2011:1155 [ref. 31643], Barriga Salazar 2014:116 [ref. 35745], Sarmiento et al. 2014:107, 188 [ref. 35004], Ferraris et al. 2017:[26] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Urbano-Bonilla et al. 2018:73 [ref. 35773], Ochoa et al. 2020:64 [ref. 37781], Meza-Vargas et al. 2021:21 [ref. 39298], Lasso et al. in Lasso & Morales-Betancourt 2022:94 [ref. 40783], Taphorn et al. 2022:40 [ref. 41297]). Current status: Valid as Gymnorhamphichthys hypostomus Ellis 1912. Rhamphichthyidae. Distribution: South America: Amazon and Orinoco river basins (Bolivia, Brazil, Colombia, Ecuador, Guyana and Peru). Habitat: freshwater.

isbruckeri, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1127, Fig. 21 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Caño Magua, forest stream, approximately 1 km from Magua, 13 km and 126° from San Fernando de Atabapo, Río Orinoco drainage, 3°58'50.2"N, 67°36'28.1"W, Amazonas, Venezuela. Holotype: UF 175390. Paratypes: UF 148537 (2), 148539 (6, 3 c&s). Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus isbruckeri de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236], Campos-da-Paz 2018:198 [ref. 35891]). Current status: Valid as Hypopygus isbruckeri de Santana & Crampton 2011. Rhamphichthyidae. Distribution: San Fernando de Atabapo, Río Orinoco drainage, Amazonas, Venezuela. Habitat: freshwater.

lepturus, Hypopygus Hoedeman [J. J.] 1962:99, Fig. 4 [Bulletin of Aquatic Biology v. 3 (no. 30); ref. 12585] Maroni basin, Suriname. Holotype: RMNH 19466. Paratypes: RMNH 24408 [ex RMNH 19466] (1). Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. Type locality by restriction (see de Santana & Crampton 2011:1128 [ref. 31643]) is not provided for in the Code. •Valid as Hypopygus lepturus Hoedeman 1962 -- (Ortega & Vari 1986:13 [ref. 9708], Mago-Leccia 1994:50 [ref. 21320], Planquette et al. 1996:394 [ref. 22818], Albert & Campos-da-Paz 1998:423 [ref. 23853], Lasso et al. 2001:100 [ref. 25928], Albert & Crampton in Reis et al. 2003:495 [ref. 27061], de Santana & Crampton 2011:1128 [ref. 31643], Barriga Salazar 2014:116 [ref. 35745], Peixoto et al. 2013:232 [ref. 32780], Sarmiento et al. 2014:188 [ref. 35004], Ferraris et al. 2017:[27] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Urbano-Bonilla et al. 2018:73 [ref. 35773], Campos-da-Paz 2018:198 [ref. 35891], Ochoa et al. 2020:64 [ref. 37781], Meza-Vargas et al. 2021:21 [ref. 39298], Borstein et al. 2022:16 [ref. 39507], Taphorn et al. 2022:40 [ref. 41297], Torgersen et al. 2023:780 [ref. 40692]). Current status: Valid as Hypopygus lepturus Hoedeman 1962. Rhamphichthyidae. Distribution: South America: Amazon and Orinoco River basins, tributaries of the Paraguay River, and coastal rivers of the Guianas (Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname and Venezuela). Habitat: freshwater.

lineatus, Rhamphichthys Castelnau [F. L.] 1855:87, Pl. 47 (fig. 1) [Animaux nouveaux or rares v. 2; ref. 766] Lake of Río Ucayali, Peru. Holotype (unique): MNHN 0000-3982. Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys lineatus Castelnau 1855 -- (Mago-Leccia 1994:42 [ref. 21320], Chang & Ortega 1995:3 [ref. 24302], Triques 1999:1 [ref. 24281], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:493 [ref. 27061], de Santana & Crampton 2011:1155 [ref. 31643], Barriga Salazar 2014:116 [ref. 35745] as cf. lineatus, Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236], Meza-Vargas et al. 2021:21 [ref. 39298], Carvalho & Albert 2023:39 [ref. 40654]). Current status: Valid as Rhamphichthys lineatus Castelnau 1855. Rhamphichthyidae. Distribution: South America: Ucayali, Solimões, and Amazon River drainages, western Amazon basin, Peru and Brazil. Habitat: freshwater.

longior, Rhamphichthys Triques [M. L.] 1999:4 [Revue française d'Aquariologie Herpétologie v. 26 (no. 1/2); ref. 24281] Paru Lake (formed in the confluence of the Rios Trombetas and Paru-do-Oeste) at Oriximiná, PA, Brazil, about 1°45'S, 55°52'W. Holotype: MZUSP 48507. Paratypes: MZUSP 5630 (3). Type catalog: Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys longior Triques 1999 -- (Ferraris in Reis et al. 2003:493 [ref. 27061], Carvalho & Albert 2015:40 [ref. 33681], Ferraris et al. 2017:[28] [ref. 35236]). •Synonym of Rhamphichthys pantherinus Castelnau 1855 -- (Carvalho & Albert 2023:44 [ref. 40654]). Current status: Synonym of Rhamphichthys pantherinus Castelnau 1855. Rhamphichthyidae. Habitat: freshwater.

longirostratus, Gymnotus Lacepède [B. G. E.] 1800:145, 178 [Histoire naturelle des poissons (Lacepède) v. 2; ref. 2709] South America. No types known. Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. Unnecessary replacement name for Gymnotus rostratus Linnaeus 1766. Also appeared in Sonnini 1803:387 (v. 5) [ref. 30473]. •Questionably a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Mago-Leccia 1994:41 [ref. 21320], Ferraris in Reis et al. 2003:493 [ref. 27061]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Albert 2001:124 [ref. 25614], Ferraris et al. 2017:[29] [ref. 35236], Carvalho & Albert 2023:55 [ref. 40654]). Replacement Name. Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.

marmoratus, Rhamphichthys Castelnau [F. L.] 1855:86, Pl. 46 (fig. 2) [Animaux nouveaux or rares v. 2; ref. 766] Rio Araguay, Brazil. Holotype (unique): MNHN 0000-3959 (poor condition). Type catalog: Bertin 1948:43 [ref. 19577], Ferraris et al. 2017:[28] [ref. 35236]. •Valid as Rhamphichthys marmoratus Castelnau 1855 -- (Mago-Leccia 1994:41 [ref. 21320], Triques 1999:1 [ref. 24281], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:493 [ref. 27061], de Santana & Crampton 2011:1155 [ref. 31643], Barriga Salazar 2014:116 [ref. 35745] as cf. marmoratus, Ramos et al. 2014:4 [ref. 35321], Sarmiento et al. 2014:108, 188 [ref. 35004], Carvalho & Albert 2015:40 [ref. 33681], DoNascimiento et al. 2017:66 [ref. 35633], Ochoa et al. 2020:64 [ref. 37781], Taphorn et al. 2022:40 [ref. 41297]). •Synonym of Rhamphichthys pantherinus Castelnau 1855 -- (Ferraris et al. 2017:[28] [ref. 35236], Carvalho & Albert 2023:43 [ref. 40654]). Current status: Synonym of Rhamphichthys pantherinus Castelnau 1855. Rhamphichthyidae. Habitat: freshwater.

minissimus, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1141, Fig. 25 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Caño Viejita, moriche palm swamp in savannah, road from San Fernando de Atabapo to Santa Bárbara, 16.5 km and 142° from San Fernando de Atabapo, Río Orinoco drainage, 3°55'59.0"N, 67°36'34.2"W, Amazonas, Venezuela. Holotype: UF 175389. Paratypes: UF 148533 (5, 3 c&s). Plus non-type specimens. Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus minissimus de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236]). Current status: Valid as Hypopygus minissimus de Santana & Crampton 2011. Rhamphichthyidae. Distribution: Upper Orinoco River basin and tributary of Casiquiare canal, Venezuela. Habitat: freshwater.

mirabilis, Rhamphichthys (Brachyrhampichthys) Steindachner [F.] 1880:104 [52], Pl. 9 (figs. 1-1a) [Denkschriften der Kaiserlichen Akademie der Wissenschaften in Wien, Mathematisch-Naturwissenschaftliche Classe. v. 42; ref. 14403] Rio Negro, Amazonas, Brazil. No types known. Type catalog: Ferraris et al. 2017:[29] [ref. 35236]. Specimen on Pl. 9 (figs. 1-1a) is named Rhamphichthys (Brachyrhamphichthys) mirabilis in figure caption, a taxon not discussed in the text; apparently an unintentional second name for Rhamphichthys (Brachyrhamphichthys) elegans. First reviser not researched; Albert & Crampton in Reis et al. 2003:496 [ref. 27061] serve as first revisers if not established earlier. •Synonym of Brachyhypopomus elegans (Steindachner 1880) -- (Mago-Leccia 1994:50 [ref. 21320]). •Synonym of Steatogenys elegans (Steindachner 1880) -- (Albert & Crampton in Reis et al. 2003:496 [ref. 27061], Crampton et al. 2004:78 [ref. 27504], Ferraris et al. 2017:[29] [ref. 35236]). Current status: Synonym of Steatogenys elegans (Steindachner 1880). Rhamphichthyidae. Habitat: freshwater.

neblinae, Hypopygus Mago-Leccia [F.] 1994:86, Fig. 96 [Electric fishes of the continental waters of America; ref. 21320] Río Baria, 3 kilometers downriver of Neblina base camp, Amazonas, Venezuela. Holotype: MBUCV-V-14694. Paratypes: AMNH 58648 (3), 58669-70 (5, 3); ANSP 162126 (1); MBUCV-V-8077 (1), V-11217 (1), V-12997-98 (23, 14), V-14186 (1), V-14708 (1), V-14741 (79), V-14770-71 (2, 3); MCNG 12243 (15), 12370 (5). Type catalog: Provenzano et al. 1998:11 [ref. 24196], Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus neblinae Mago-Leccia 1994 -- (Albert & Crampton in Reis et al. 2003:495 [ref. 27061], de Santana & Crampton 2011:1144 [ref. 31643], Peixoto et al. 2013:232 [ref. 32780], Sarmiento et al. 2014:188 [ref. 35004], Ferraris et al. 2017:[27] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Urbano-Bonilla et al. 2018:73 [ref. 35773], Campos-da-Paz 2018:199 [ref. 35891], Ochoa et al. 2020:64 [ref. 37781]). Current status: Valid as Hypopygus neblinae Mago-Leccia 1994. Rhamphichthyidae. Distribution: South America: Amazon and Orinoco river basins (Brazil, Colombia, Bolivia and Venezuela). Habitat: freshwater.

nijsseni, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1146, Figs. 23B, 29 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Igarapé Repartimento, 1.5 km downstream from Estrada Agrovila, ca. 7 km and 230° from Tefé, muncipality of Tefé, tributary of Lago Tefé, Rio Tefé drainage, 3°24'30"S, 64°44'12"W, Amazonas, Brazil. Holotype: MCP 44650. Paratypes: MCP 44651 (4, 2 c&s), 44737 (4), 44738 (3), 44739 (2), 44740 (1). Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus nijsseni de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236], Campos-da-Paz 2018:198 [ref. 35891]). Current status: Valid as Hypopygus nijsseni de Santana & Crampton 2011. Rhamphichthyidae. Distribution: Small streams in vicinity of Tefé, Amazonas, Brazil. Habitat: freshwater.

ocellatus, Steatogenys Crampton [W. G. R.], Thorsen [D. H.] & Albert [J. S.] 2004:81, Figs. 2-3 [Copeia 2004 (no. 1); ref. 27504] Mouth of Rio Baré, Municipality of Maraã, 2°09'54"S, 64°42'48"W, Lago Amanã, Rio Japurá, Amazonas, Brazil. Holotype: MCP 31908. Paratypes: INPA 21081 (1); MCP 31909 (1), 31910 (1, c&s), 31911-13 (1, 1, 1). Plus non-type material. Type catalog: Ferraris et al. 2017:[29] [ref. 35236]. •Valid as Steatogenys ocellatus Crampton, Thorsen & Albert 2004 -- (Ferraris et al. 2017:[29] [ref. 35236], Bogotá-Gregory et al. 2018:610 [ref. 36083], Taphorn et al. 2022:40 [ref. 41297]). Current status: Valid as Steatogenys ocellatus Crampton, Thorsen & Albert 2004. Rhamphichthyidae. Distribution: South America: upper Amazon River basin (Brazil, Colombia, Guyana and Peru). Habitat: freshwater.

ortegai, Hypopygus de Santana [C. D.] & Crampton [W. G. R.] 2011:1148, Figs. 23C, 30 [Zoological Journal of the Linnean Society v. 163; ref. 31643] Unnamed stream, 2 km north of km 3.9 on road from Jenaro Herrera to Colonia Angamos, 4°53'01"S, 73°38'10"W, Loreto, Peru. Holotype: MUSM 35305. Paratypes: many at UF and MUSM. Plus non-type specimens. Type catalog: Ferraris et al. 2017:[27] [ref. 35236]. •Valid as Hypopygus ortegai de Santana & Crampton 2011 -- (Peixoto et al. 2013:232 [ref. 32780], Ferraris et al. 2017:[27] [ref. 35236], Meza-Vargas et al. 2021:21 [ref. 39298]). Current status: Valid as Hypopygus ortegai de Santana & Crampton 2011. Rhamphichthyidae. Distribution: South America: upper Amazon River drainage (Peru). Habitat: freshwater.

pantherinus, Rhamphichthys Castelnau [F. L.] 1855:86, Pl. 46 (fig. 3) [Animaux nouveaux or rares v. 2; ref. 766] Lake near Río Ucayali, Peru. Holotype (unique): MNHN 0000-3993. Type catalog: Bertin 1948:43 [ref. 19577], Ferraris et al. 2017:[28] [ref. 35236]. Günther 1875:5 [ref. 1995] serves as first reviser selecting pantherinus over marmoratus (see Ferraris et al. 2017:[28] [ref. 35236]). •Provisionally a synonym of Rhamphichthys marmoratus Castelnau 1855 -- (Triques 1999:1 [ref. 24281], Ferraris in Reis et al. 2003:493 [ref. 27061]). •Valid as Rhamphichthys pantherinus Castelnau 1855 -- (Mago-Leccia 1994:41 [ref. 21320], Chang & Ortega 1995:3 [ref. 24302], Albert 2001:124 [ref. 25614], Ferraris et al. 2017:[28] [ref. 35236], Silvano et al. 2020:199 [ref. 38135], Meza-Vargas et al. 2021:21 [ref. 39298], Carvalho & Albert 2023:43 [ref. 40654], Koerber et al. 2023:5 [ref. 40665], Torgersen et al. 2023:780 [ref. 40692], Limeira-Filho et al. 2024:6 [ref. 41573]). Current status: Valid as Rhamphichthys pantherinus Castelnau 1855. Rhamphichthyidae. Distribution: South America: upper Orinoco, Tocantins, Essequibo, and coastal northern River drainages of Brazil from the Turiaçu to Paranaiba River drainages, and western Amazon basin (Colombia, Venezuela, Guyana, Brazil, Peru and Ecuador). IUCN (2023): Least Concern. Habitat: freshwater.

petiti, Gymnorhamphichthys hypostomus Géry [J.] & Vu [T.-T.] 1964:486, Pl. 1 [Vie et Milieu Supplément No. 17; ref. 10073] Ilha do Bananal, upper Rio Araguaia, Brazil. Holotype: MHNG 2167.15 [ex Géry coll. M.340]. Paratypes: (21) ZSM 26764 (1). Type catalog: Weber 1998:10 [ref. 32707], Neumann 2011:275 [ref. 31652], Ferraris et al. 2017:[26] [ref. 35236]. •Valid as Gymnorhamphichthys petiti Géry & Vu 1964 -- (Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:492 [ref. 27061], Lundberg 2005:3 [ref. 20334], Carvalho et al. 2011:400 [ref. 31553]). •Synonym of Gymnorhamphichthys rondoni (Miranda Ribeiro 1920) -- (Mago-Leccia 1994:43 [ref. 21320], Ferraris et al. 2017:[26] [ref. 35236]). Current status: Synonym of Gymnorhamphichthys rondoni (Miranda Ribeiro 1920). Rhamphichthyidae. Habitat: freshwater.

reinhardti, Rhamphichthys Kaup [J. J.] 1857:132, Fig. 8 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] No locality. Holotype (unique): MNHN 0000-3956. Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. •Valid as Rhamphichthys reinhardti Kaup 1857 -- (Mago-Leccia 1994:42 [ref. 21320], Albert 2001:124 [ref. 25614]). •Provisionally a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Triques 1999:1 [ref. 24281], Ferraris in Reis et al. 2003:493 [ref. 27061], Ferraris et al. 2017:[29] [ref. 35236]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Carvalho & Albert 2023:56 [ref. 40654]). Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.

rondoni, Urumara Miranda Ribeiro [A. de] 1920:6 [Peixes (excl. Characinidae) No. 58 (Annexo 5); ref. 3727] Rio 17 de Fevereiro, tributary of Alto Cautário, Amazonas, Brazil. Holotype (unique): MNRJ 3631. Type catalog: Miranda Ribeiro 1955:398 [ref. 12732], Ferraris et al. 2017:[26] [ref. 35236]. •Valid as Gymnorhamphichthys rondoni (Miranda Ribeiro 1920) -- (Schwassmann 1989:157 [ref. 13745], Mago-Leccia 1994:42 [ref. 21320], Chang & Ortega 1995:3 [ref. 24302], Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:492 [ref. 27061], Lundberg 2005:3 [ref. 29334], Carvalho et al. 2011:400 [ref. 31553], de Santana & Crampton 2011:1155 [ref. 31643], Barriga Salazar 2014:116 [ref. 35745], Sarmiento et al. 2014:107, 188 [ref. 35004], Melo et al. 2016:134 [ref. 34701], DoNascimiento et al. 2017:66 [ref. 35633], Ferraris et al. 2017:[26] [ref. 35236], Garcia & Zuanon 2019:215 [ref. 36947], Ochoa et al. 2020:64 [ref. 37781], Meza-Vargas et al. 2021:21 [ref. 39298], Koerber et al. 2022:44 [ref. 39235], Taphorn et al. 2022:40 [ref. 41297], Torgersen et al. 2023:780 [ref. 40692]). Current status: Valid as Gymnorhamphichthys rondoni (Miranda Ribeiro 1920). Rhamphichthyidae. Distribution: South America: Amazon, Paraná, Orinoco River basins and coastal rivers of the Guianas (Brazil, Ecuador, Bolivia, Colombia, Guyana, Paraguay, Peru, Suriname and Venezuela). Habitat: freshwater.

rosamariae, Gymnorhamphichthys Schwassmann [H. O.] 1989:159, Figs. 1-3 [Studies on Neotropical Fauna and Environment v. 24 (no. 3); ref. 13745] Upper Rio Negro at Rosa Maria, Amazonas, 0.5°S, 64°W, Brazil. Holotype: MZUSP 30202. Paratypes: MZUSP 36702 (5). Additional material: MZUSP 30194 (1), 30203 (6). Type catalog: Ferraris et al. 2017:[26] [ref. 35236]. Not treated by Mago-Leccia 1994 [ref. 21320]. •Valid as Gymnorhamphichthys rosamariae Schwassmann 1989 -- (Albert 2001:124 [ref. 25614], Ferraris in Reis et al. 2003:492 [ref. 27061], Lundberg 2005:3 [ref. 29334], Carvalho et al. 2011:400 [ref. 31553], Ferraris et al. 2017:[26] [ref. 35236], Taphorn et al. 2022:40 [ref. 41297]). Current status: Valid as Gymnorhamphichthys rosamariae Schwassmann 1989. Rhamphichthyidae. Distribution: South America: Rio Negro basin, Essequibo and Takutu river basins (Brazil and Guyana). Habitat: freshwater.

rostratus, Gymnotus Linnaeus [C.] 1766:428 [Systema naturae sive regna tria naturae v. 1 (pt 1); ref. 2786] America [South America]. No types known. Type catalog: Ferraris et al. 2017:[28] [ref. 35236] with remarks. Based on multiple sources, including the 'Gymnotus maxillis elongatis tubulosis ...' of Gronow 1763:41 [ref. 1910], and Seba 1759:99, pl. 32, fig. 5 [ref. 18716]. •Valid as Rhamphichthys rostratus (Linnaeus 1766) -- (Ortega & Vari 1986:13 [ref. 9708], Mago-Leccia 1994:41 [ref. 21320], Planquette et al. 1996:400 [ref. 22818], Albert & Campos-da-Paz 1998:423 [ref. 23853], Sverlij et al. 1998:40 [ref. 27632], Triques 1999:1 [ref. 24281], Albert 2001:124 [ref. 25614], Lasso et al. 2001:100 [ref. 25928], Ferraris in Reis et al. 2003:493 [ref. 27061], López et al. 2003:65 [ref. 27366], Menni 2004:84 [ref. 28131], Sarmiento et al. 2014:108, 188 [ref. 35004], Carvalho & Albert 2015:40 [ref. 33681], Melo et al. 2016:134 [ref. 34701], Nión et al. 2016:34 [ref. 35565] as Ramphichthys, Ferraris et al. 2017:[28] [ref. 35236], DoNascimiento et al. 2017:66 [ref. 35633], Urbano-Bonilla et al. 2018:73 [ref. 35773], Ochoa et al. 2020:64 [ref. 37781], Silvano et al. 2020:199 [ref. 38135], Meza-Vargas et al. 2021:21 [ref. 39298], Koerber et al. 2022:45 [ref. 39235], Taphorn et al. 2022:40 [ref. 41297], Carvalho & Albert 2023:55 [ref. 40654], Torgersen et al. 2023:780 [ref. 40692]). Current status: Valid as Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Distribution: South America: Amazon, Essequibo, Tocantins, and coastal River basins of the Guianas (Bolivia, Peru, Colombia, Venezuela, Guyana, Suriname, French Guiana and Brazil). Habitat: freshwater.

schneideri, Rhamphichthys Kaup [J. J.] 1857:136, Fig. 11 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] Cayenne, French Guiana. Syntypes: (2) ?MNHN 0000-3957 (1). Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. •Questionably a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Mago-Leccia 1994:41 [ref. 21320], Ferraris in Reis et al. 2003:493 [ref. 27061]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Albert 2001:124 [ref. 25614], Ferraris et al. 2017:[29] [ref. 35236], Carvalho & Albert 2023:56 [ref. 40654]). Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.

schomburgki, Rhamphichthys Kaup [J. J.] 1857:135, Fig. 10 [Catalogue of the apodal fish in the collection of the British Museum; ref. 2573] Rivers of Demerara, northern Guyana. Holotype (unique): MNHN 0000-3958. Type catalog: Ferraris et al. 2017:[29] [ref. 35236] with remarks. •Valid as Rhamphichthys schomburgki Kaup 1857 -- (Mago-Leccia 1994:41 [ref. 21320]). •Provisionally a synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Triques 1999:1 [ref. 24281]). •Synonym of Rhamphichthys rostratus (Linnaeus 1766) -- (Mago-Leccia 1994:41 [ref. 21320] with question, Ferraris in Reis et al. 2003:493 [ref. 27061] with question, Ferraris et al. 2017:[29] [ref. 35236], Carvalho & Albert 2023:56 [ref. 40654]). Current status: Synonym of Rhamphichthys rostratus (Linnaeus 1766). Rhamphichthyidae. Habitat: freshwater.

varii, Hypopygus Campos-da-Paz [R.] 2018:192, Figs. 1-2 [Zootaxa 4410 (no. 1); ref. 35891] Igarapé Saracá, Oriximiná, rio Trombetas drainage, Amazon basin, Pará, Brazil, 1°31'22"S, 56°19'52"W. Holotype: MNRJ 46752. Paratypes: MNRJ. •Valid as Hypopygus varii Campos-da-Paz 2018. Current status: Valid as Hypopygus varii Campos-da-Paz 2018. Rhamphichthyidae. Distribution: Rio Trombetas drainage, Amazon basin, Brazil. Habitat: freshwater.