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

Species in the genus Otocinclus: [ 22 ] records

affinis, Otocinclus Steindachner [F.] 1877:221 [5], Pl. 1 (figs. 1-1b) [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 76 (1. Abth.); ref. 14247] Streams at Santa Cruz in region of Rio de Janeiro, Brazil. Lectotype: NMW 45368:1. Paralectotypes: NMW 45368:2-3 (2). Type catalog: Ferraris 2007:271 [ref. 29155]. On p. 5 of separate. Lectotype selected by Schaefer 1997:49 [ref. 23213]. •Valid as Macrotocinclus affinis (Steindachner 1877) -- (Isbrücker et al. 2001:20 [ref. 25649], Isbrücker et al. 2001:30 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Ferraris 2007:271 [ref. 29155]). •Valid as Otocinclus affinis Steindachner 1877 -- (Isbrücker 1980:81 [ref. 2303], Burgess 1989:438 [ref. 12860], Schaefer 1997:46 [ref. 23213], Britto & Moreira 2002:1067 [ref. 26512], Britto et al. 2002:735 [ref. 26546], Schaefer in Reis et al. 2003:324 [ref. 27061], López et al. 2003:44 [ref. 27366], Menni 2004:79 [ref. 28131], Delapieve et al. 2018:23 [ref. 35713]). •Stefan Koerber, pers. comm. 3/8/2010 suggests that the López et al. 2003 and Menni 2004 references are not this species and range is Brazil only. Current status: Valid as Otocinclus affinis Steindachner 1877. Loricariidae: Hypoptopomatinae. Distribution: Brazil. Habitat: freshwater.

arnoldi, Otocinclus Regan [C. T.] 1909:234 [Annals and Magazine of Natural History (Series 8) v. 3 (no. 14); ref. 14416] "La Plata" [?Rio de la Plata], South America. Holotype (unique): BMNH 1908.12.5.13. Type catalog: Ferraris 2007:271 [ref. 29155]. •Synonym of Macrotocinclus flexilis (Cope 1894) -- (Isbrücker 2001:30 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Ferraris 2007:271 [ref. 29155]). •Synonym of Otocinclus flexilis Cope 1894 -- (Aquino 1996:13 [ref. 22664], Schaefer 1997:49 [ref. 23213], Schaefer in Reis et al. 2003:324 [ref. 27061], Carvalho & Reis 2009:2 [ref. 30193]). •Valid as Otocinclus arnoldi Regan 1909 -- (Isbrücker 1980:81 [ref. 2303], Burgess 1989:438 [ref. 12860], Lehmann A. et al. 2010:60 [ref. 30756], Koerber 2011:5 [ref. 31122], Koerber 2014:8 [ref. 33621], Litz & Koerber 2014:24 [ref. 33622], Mirande & Koerber 2015:40 [ref. 35117], Ribeiro & Lehmann A. 2016:240 [ref. 34636], Bertaco et al. 2016:419 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Koerber et al. 2017:59 [ref. 35267], Delapieve et al. 2018:23 [ref. 35713], Loureiro et al. 2023:117 [ref. 40506]). Current status: Valid as Otocinclus arnoldi Regan 1909. Loricariidae: Hypoptopomatinae. Distribution: South America: lower Paraná, Uruguai and de La Plata River basins (Brazil, Uruguay and Argentina). Habitat: freshwater.

batmani, Otocinclus Lehmann A. [P.] 2006 [Neotropical Ichthyology v. 4 (no. 4); ref. 28896] Small tributary stream of Río Puré, Río Japurá draingae, upper Amazonas basin, 2°07'05"S, 69°37'50"W, Amazonas, Colombia. Holotype: ICNMHN 6721. Paratypes: ANSP 178616 (4, 1 c&s); ICNMHN 6722 (1); MCP 28172 (1), 34087 (1 c&s); MHNUC 474 (1). Type catalog: Mojica & Agudelo-Zamora 2018:34 [ref. 36127]. •Valid as Otocinclus batmani Lehmann A. 2006 -- (Barriga Salazar 2014:112 [ref. 35745], Ribeiro & Lehmann A. 2016:240 [ref. 34636], DoNascimiento et al. 2017:76 [ref. 35633], Delapieve et al. 2018:23 [ref. 35713], Meza-Vargas et al. 2021:26 [ref. 39298]). Current status: Valid as Otocinclus batmani Lehmann A. 2006. Loricariidae: Hypoptopomatinae. Distribution: South America: Amazon River basin (Colombia, Ecuador and Peru). Habitat: freshwater.

bororo, Otocinclus Schaefer [S. A.] 1997:69, Fig. 43 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 148; ref. 23213] Barra do Bugres, stream crossing road between Barra do Bugres and Cáceres, about 15°20'S, 57°12'W, Mato Grosso State, Brazil. Holotype: MCP 19285. Paratypes: AMNH 215990 (5); MCP 15604 (3), 15721 (7, 2 c&s), 15796 (4). Type catalog: Ferraris 2007:274 [ref. 29155]. •Valid as Otocinclus bororo Schaefer 1997 -- (Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:23 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:274 [ref. 29155], Lehmann A. et al. 2010:638 [ref. 31083], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus bororo Schaefer 1997. Loricariidae: Hypoptopomatinae. Distribution: Upper Paraguay River basin, Brazil. Habitat: freshwater.

caxarari, Otocinclus Schaefer [S. A.] 1997:71, Figs. 44, 49b [Proceedings of the Academy of Natural Sciences of Philadelphia v. 148; ref. 23213] Between Guajara-Mirim and Mato Grosso, about 10°48'S, 65°23'W, Rio Solimões/Madeira/Guaporé basin, Brazil/Bolivia border. Holotype: MZUSP 51102. Paratypes: MCP 19286 (9), MZUSP 51602 (9), USNM 316402 (21, 2 c&s), plus non-type material. Type catalog: Ferraris 2007:274 [ref. 29155]. •Valid as Otocinclus caxarari Schaefer 1997 -- (Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:23 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:274 [ref. 29155], Sarmiento et al. 2014:191 [ref. 35004], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus caxarari Schaefer 1997. Loricariidae: Hypoptopomatinae. Distribution: Upper Madeira River basin: Bolivia and Brazil. Habitat: freshwater.

cocama, Otocinclus Reis [R. E.] 2004:110, Figs. 1-4 [Neotropical Ichthyology v. 2 (no. 3); ref. 27934] Quebrada Yamayacu, about 4°55'S, 73°43'W, tributary to the caño of the cocha Supay in Jenaro Herrera, Provincia Requena, Departamento Loreto, Peru. Holotype: MUSM 20686. Paratypes: AMNH 233730 (3), MCP 34842 (10, 2 c&s), MUSM 20687 (5). Type catalog: Ferraris 2007:274 [ref. 29155]. •Valid as Otocinclus cocama Reis 2004 -- (Ferraris 2007:274 [ref. 29155], Ribeiro & Lehmann A. 2016:245 [ref. 34636], Delapieve et al. 2018:23 [ref. 35713], Meza-Vargas et al. 2021:26 [ref. 39298], Mejia & Reis 2023:[2] [ref. 40702]). Current status: Valid as Otocinclus cocama Reis 2004. Loricariidae: Hypoptopomatinae. Distribution: South America: lower Ucayali and Marañon rivers, upper Amazon River basin (Peru). Habitat: freshwater.

fimbriatus, Otocinclus Cope [E. D.] 1894:98, Pl. 9 (figs. 16, 16a-b) [Proceedings of the American Philosophical Society v. 33; ref. 965] Rio Jacuhy [Jacuí], Rio Grande do Sul, Brazil. Syntypes: ANSP 21752 (4), 21585-97 (14). Type catalog: Böhlke 1984:122 [ref. 13621], Ferraris 2007:271 [ref. 29155]. •Valid as Otocinclus fimbriatus Cope 1894 -- (Isbrücker 1980:82 [ref. 2303], Burgess 1989:438 [ref. 12860]). •Synonym of Macrotocinclus flexilis (Cope 1894) -- (Isbrücker 2001:30 [ref. 25653], Isbrücker 2002:24 [ref. 27178], Ferraris 2007:271 [ref. 29155]). •Synonym of Otocinclus flexilis Cope 1894 -- (Malabarba 1989:150-151 [ref. 14217], Schaefer 1997:49 [ref. 23213], Schaefer in Reis et al. 2003:324 [ref. 27061], Lehmann A. et al. 2010:60 [ref. 30756], Litz & Koerber 2014:24 [ref. 33622]). Current status: Synonym of Otocinclus flexilis Cope 1894. Loricariidae: Hypoptopomatinae. Habitat: freshwater.

flexilis, Otocinclus Cope [E. D.] 1894:97, Pl. 8 [7] (figs. 13, 13a-b) [Proceedings of the American Philosophical Society v. 33; ref. 965] Rio Jacuhy [Jacuí], Rio Grande do Sul, Brazil. Lectotype: ANSP 21756. Paralectotypes: ANSP 21622-26 (5), 21757-67 (11). Type catalog: Böhlke 1984:122 [ref. 13621], Ferraris 2007:271 [ref. 29155]. Intended Pl. 7 was reversed with Pl. 8. Lectotype selected by Schaefer 1997:53 [ref. 23213]. •Valid as Macrotocinclus flexilis (Cope 1894) -- (Isbrücker et al. 2001:20 [ref. 25649], Isbrücker et al. 2001:30 [ref. 25653], Isbrücker 2002:23 [ref. 27178], Menni 2004:79 [ref. 28131], Ferraris 2007:271 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127]). •Valid as Otocinclus flexilis Cope 1894 -- (Isbrücker 1980:82 [ref. 2303], Malabarba 1989:150 [ref. 14217], Burgess 1989:438 [ref. 12860], Schaefer 1991:6 [ref. 18926], Aquino 1994:218 [ref. 22311], Aquino 1996:13 [ref. 22664], Schaefer 1997:49 [ref. 23213], Gómez & Chebez 1996:62 [ref. 23791], Britto & Moreira 2002:1067 [ref. 26512], Britto et al. 2002:735 [ref. 26546], Schaefer in Reis et al. 2003:324 [ref. 27061], López et al. 2003:44 [ref. 27366], Axenrot & Kullander 2003:256 [ref. 27393], Lehmann A. et al. 2010:60 [ref. 30756], Koerber 2011:5 [ref. 31122], Litz & Koerber 2014:24 [ref. 33622], Bertaco et al. 2016:419 [ref. 34561], Nión et al. 2016:31 [ref. 35565], Delapieve et al. 2018:23 [ref. 35713], Loureiro et al. 2023:117 [ref. 40506]). Current status: Valid as Otocinclus flexilis Cope 1894. Loricariidae: Hypoptopomatinae. Distribution: South America: Rio Jacuí, Laguna dos Patos system, Rio Grande do Sul (Brazil) and Uruguay. Habitat: freshwater.

hasemani, Otocinclus Steindachner [F.] 1915:348 [Anzeiger der Kaiserlichen Akademie der Wissenschaften, Wien, Mathematisch-Naturwissenschaftliche Klasse v. 52 (no. 27); ref. 20500] Rio Parnaiba basin, Engenhão de Agua, about 4°52'S, 43°10'W, Maranhão State, Brazil. Lectotype: 45369:1 (largest). Paralectotypes: NMW 45369:2-20 (21). Type catalog: Ferraris 2007:274 [ref. 29155]. Species described in more detail in Steindachner 1915:578 [ref. 15070]. Lectotype selected by Schaefer 1997:62 [ref. 23213]. •Valid as Otocinclus hasemani Steindachner 1915 -- (Isbrücker 1980:83 [ref. 2303], Burgess 1989:438 [ref. 12860], Schaefer 1997:60 [ref. 23213], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:274 [ref. 29155], Ramos et al. 2014:4 [ref. 35321], Delapieve et al. 2018:23 [ref. 35713], Koerber et al. 2022:51 [ref. 39235]). Current status: Valid as Otocinclus hasemani Steindachner 1915. Loricariidae: Hypoptopomatinae. Distribution: South America: Tocantins and Parnaíba River basins (northeastern Brazil). Habitat: freshwater.

hoppei, Otocinclus Miranda Ribeiro [A. de] 1939:359 [Boletim Biológico, São Paulo (Nova Série) v. 4 (no. 3); ref. 3023] Amazon River at Belém, Pará State, Brazil. Lectotype: MNRJ 1030. Paralectotypes: MNRJ 1030 (1). Type catalog and lectotype designation: Miranda Ribeiro 1955:401 [ref. 12732] [but perhaps specimen not isolated]. Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus hoppei Miranda Ribeiro 1939 -- (Isbrücker 1980:83 [ref. 2303], Burgess 1989:438 [ref. 12860], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:275 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127], Lehmann A. et al. 2010:636 [ref. 31083], Ribeiro & Lehmann A. 2016:244 [ref. 34636], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus hoppei Miranda Ribeiro 1939. Loricariidae: Hypoptopomatinae. Distribution: Amazon River basin, Brazil. Habitat: freshwater.

huaorani, Otocinclus Schaefer [S. A.] 1997:74, Fig. 46 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 148; ref. 23213] Tributary to Río San Miguel (kilometer 50, 4.5 kilometers south of Tipischca), about 0°10'N, 76°13'W, Río Amazonas/Napo basin, Napo, Ecuador. Holotype: FMNH 101555. Paratypes: ANSP 130492 (1), FMNH 101548-49 (1, 4), MCZ 51879 (4), plus non-type material. Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus huaorani Schaefer 1997 -- (Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:324 [ref. 27061], Ferraris 2007:275 [ref. 29155], Barriga Salazar 2014:112 [ref. 35745], DoNascimiento et al. 2017:76 [ref. 35633], Urbano-Bonilla et al. 2018:75 [ref. 35773], Delapieve et al. 2018:23 [ref. 35713], Meza-Vargas et al. 2021:26 [ref. 39298]). Current status: Valid as Otocinclus huaorani Schaefer 1997. Loricariidae: Hypoptopomatinae. Distribution: South America: Amazon and Orinoco River basins (Colombia, Ecuador and Peru). Habitat: freshwater.

juruenae, Otocinclus Ribeiro [A. C.] & Lehmann A. [P.] 2016:241, Figs. 1, 3 [Zootaxa 4147 (no. 3); ref. 34636] Bridge over Rio São João da Barra, Juara, Rio Juruena drainage, Tapajos basin, Mato Grosso, Brazil, 10°18'46.0"S, 57°38'44.0"W. Holotype: MZUSP 120361. Paratypes: CPUFMT, MCP. •Valid as Otocinclus juruenae Ribeiro & Lehmann A. 2016 -- (Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus juruenae Ribeiro & Lehmann A. 2016. Loricariidae: Hypoptopomatinae. Distribution: Tapajos basin, Mato Grosso, Brazil. Habitat: freshwater.

macrospilus, Otocinclus Eigenmann [C. H.] & Allen [W. R.] 1942:201, Pl. 13 (fig. 1) [Fishes of western South America; ref. 1246] Río Morona, upper Amazon River basin, Dpto Loreto, Peru. Holotype: CAS 77335 [ex IU 15606]. Paratypes: CAS 77336 [ex IU 15606] (11). Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus macrospilus Eigenmann & Allen 1942 -- (Isbrücker 1980:84 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:438 [ref. 12860], Schaefer 1997:67 [ref. 23213], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Lehmann A. et al. 2010:636 [ref. 31083], Barriga Salazar 2014:112 [ref. 35745], Ribeiro & Lehmann A. 2016:244 [ref. 34636], DoNascimiento et al. 2017:76 [ref. 35633], Delapieve et al. 2018:23 [ref. 35713], Meza-Vargas et al. 2021:26 [ref. 39298]). Current status: Valid as Otocinclus macrospilus Eigenmann & Allen 1942. Loricariidae: Hypoptopomatinae. Distribution: South America: Amazon River basin (Colombia, Ecuador and Peru). Habitat: freshwater.

mangaba, Otocinclus Lehmann A. [P.], Mayer [F.] & Reis [R. E.] 2010:635, Fig. 1 [Copeia 2010 (no. 4); ref. 31083] Igarapé do Vinte e Dois at Recanto do Sanari, ca. 20 kilometers west of Humaitá toward Lábrea, 7°35'36"S. 63°10'27"W, Rio Madeira drainage, Humaitá, Amazonas, Brazil. Holotype: MCP 44291. Paratypes: ANSP 188816 (5); MCP 35594 (25), 35595 (9 + 2 c&s); MNRJ 36098 (5) •Valid as Otocinclus mangaba Lehmann A., Mayer & Reis 2010 -- (Ribeiro & Lehmann A. 2016:240 [ref. 34636], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus mangaba Lehmann A., Mayer & Reis 2010. Loricariidae: Hypoptopomatinae. Distribution: Rio Madeira drainage, Brazil. Habitat: freshwater.

mariae, Otocinclus Fowler [H. W.] 1940:83, Figs. 41-43 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 92; ref. 1436] Boca Chapare, Río Chimore, tributary to Río Ichilo, about 15°58'S, 64°42'W, Río Mamoré system, Bolivia. Holotype (unique): ANSP 69068. Type catalog: Böhlke 1984:123 [ref. 13621], Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus mariae Fowler 1940 -- (Isbrücker 1980:84 [ref. 2303], Burgess 1989:439 [ref. 12860], Schaefer 1997:66 [ref. 23213], Le Bail et al. 2000:264 [ref. 24549] as cf. mariae, Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Chiachio et al. 2008:610 [ref. 30127] as cf. mariae, Lehmann A. et al. 2010:636 [ref. 31083], Sarmiento et al. 2014:191 [ref. 35004], Ribeiro & Lehmann A. 2016:244 [ref. 34636], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus mariae Fowler 1940. Loricariidae: Hypoptopomatinae. Distribution: Upper Madeira and lower Amazon River basins, Bolivia. Habitat: freshwater.

mimulus, Otocinclus Axenrot [T. E.] & Kullander [S. O.] 2003:251, Fig. 1 [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 43480]. Paratypes: MHNG 2353.027 (1), 2531.072 (7); NRM 41800 (3), 41924 (9), 42102 (3), 42278 (5), 42332 (13), 42466 (5), 43478 (1, c&s), 43479 (1, c&s), 43557 (1), 43558 (1), 45142 (1), 46725 (1). Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus mimulus Axenrot & Kullander 2003 -- (Ferraris 2007:275 [ref. 29155], Lehmann A. et al. 2010:60 [ref. 30756], Ribeiro & Lehmann A. 2016:240 [ref. 34636], Koerber et al. 2017:59 [ref. 35267], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus mimulus Axenrot & Kullander 2003. Loricariidae: Hypoptopomatinae. Distribution: Tributary of the Monday [Mondai] River, a tributary of the lower Paraná River, Paraguay. Habitat: freshwater.

mura, Otocinclus Schaefer [S. A.] 1997:77, Fig. 47 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 148; ref. 23213] Rio Sanabani, munícìpio de Silves, about 2°51'40"S, 58°15'40:W, rio Solimões/Sanabani/Lago Canaçari basin, Brazil. Holotype: MZUSP 51101. Paratypes: MZUSP 51100 (103, 2 c&s). Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus mura Schaefer 1997 -- (Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Lehmann A. et al. 2010:636 [ref. 31083], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus mura Schaefer 1997. Loricariidae: Hypoptopomatinae. Distribution: Upper Amazon River basin, Brazil. Habitat: freshwater.

paraguensis, Rhinolepis Borodin [N. A.] 1927:7 [American Museum Novitates No. 266; ref. 12246] Paraguay. Holotype: AMNH 8641. Paratypes: AMNH 26591 (now 1), DZSASP [now MZUSP] [ex AMNH 26591] (1, not found). Type catalog: Britski 1969:200 [ref. 12401], Ferraris 2007:275 [ref. 29155]. Original genus should have been Rhinelepis. •Valid as Rhinolepis paraguensis Borodin 1927 -- (Isbrücker 1980:8 [ref. 2303], Burgess 1989:429 [ref. 12860]). •Synonym of Otocinclus vittatus Regan 1904 -- (Isbrücker 2001:32 [ref. 25653], Isbrücker 2002:28 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Mirande & Koerber 2015:41 [ref. 35117], Koerber et al. 2017:59 [ref. 35267]). Current status: Synonym of Otocinclus vittatus Regan 1904. Loricariidae: Hypoptopomatinae. Habitat: freshwater.

tapirape, Otocinclus Britto [M. R.] & Moreira [C. R.] 2002:1064, Figs. 1-3 [Copeia 2002 (no. 4); ref. 26512] Córrego Agua Parada, tributary of Rio Pintado, 11 kilometers west from Novo Planalto, rio Araguaia system, 13°17'S, 49°62'W, Goiás State, Brazil. Holotype: MZUSP 73975. Paratypes: AMNH 232393 (4, 2 c&s); MZUSP 73976 (11, 5 c&s); UFRJ 5420 (8), 5421 (2, c&s). Plus non-type material. Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus tapirape Britto & Moreira 2002 -- (Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Ribeiro & Lehmann A. 2016:240 [ref. 34636], Delapieve et al. 2018:23 [ref. 35713]). Current status: Valid as Otocinclus tapirape Britto & Moreira 2002. Loricariidae: Hypoptopomatinae. Distribution: Upper and middle Araguaia River basin, Brazil. Habitat: freshwater.

vestitus, Otocinclus Cope [E. D.] 1872:283, Pl. 4 (figs. 2a-c) [Proceedings of the Academy of Natural Sciences of Philadelphia v. 23; ref. 921] Tributaries of Río Ambyiacu [Ampiyacu] near Pebas, about 3°40'S, 71°45'W, Depto. Loreto, Peru. Lectotype: ANSP 8283. Paralectotypes: ANSP 8284 (1). Type catalog: Böhlke 1984:125 [ref. 13621], Ferraris 2007:275 [ref. 29155]. Lectotype selected by Schaefer 1997:46 [ref. 23213]. •Valid as Otocinclus vestitus Cope 1872 -- (Isbrücker 1980:85 [ref. 2303], Ortega & Vari 1986:17 [ref. 9708], Burgess 1989:439 [ref. 12860], Schaefer 1991:6 [ref. 18926], Schaefer 1997:43 [ref. 23213], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Ferraris 2007:275 [ref. 29155], Koerber 2011:5 [ref. 31122], Koerber 2014:9 [ref. 33621], Koerber & Litz 2014:3 [ref. 34967], Sarmiento et al. 2014:191 [ref. 35004], Mirande & Koerber 2015:40 [ref. 35117], Koerber & Litz 2016:5 [ref. 35098], Koerber et al. 2017:59 [ref. 35267], DoNascimiento et al. 2017:76 [ref. 35633], Koerber et al. 2020:6 [ref. 37480], Delapieve et al. 2018:23 [ref. 35713], Koerber et al. 2021:7 [ref. 38894], Meza-Vargas et al. 2021:26 [ref. 39298], Koerber et al. 2023:7 [ref. 40355]). Current status: Valid as Otocinclus vestitus Cope 1872. Loricariidae: Hypoptopomatinae. Distribution: South America: Amazon and upper Paraná River basins (Colombia, Uruguay, Argentina, Bolivia, Paraguay and Peru). Habitat: freshwater.

vittatus, Otocinclus Regan [C. T.] 1904:267, Pl. 15 (fig. 3) [Transactions of the Zoological Society of London v. 17 (pt 3, no. 1); ref. 3621] Descalvados, Rio Paraguay system, Mato Grosso State, Brazil. Lectotype: BMNH 1895.5.17.83. Paralectotypes: BMNH 1895.5.17.84-87 (4), NMW 54989 (1). Lectotype selected by Schaefer 1997:57 [ref. 23213]. •Valid as Otocinclus vittatus Regan 1904 -- (Isbrücker 1980:85 [ref. 2303], Burgess 1989:439 [ref. 12860], Schaefer 1991:6 [ref. 18926], Aquino 1994:218 [ref. 22311], Schaefer 1997:55 [ref. 23213], Britski et al. 1999:133 [ref. 24147], Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], López et al. 2003:44 [ref. 27366], Menni 2004:79 [ref. 28131], Chiachio et al. 2008:610 [ref. 30127], Sarmiento et al. 2014:191 [ref. 35004], Mirande & Koerber 2015:41 [ref. 35117], Koerber et al. 2017:59 [ref. 35267], Roxo et al. 2017:351 [ref. 35310], DoNascimiento et al. 2017:76 [ref. 35633], Urbano-Bonilla et al. 2018:75 [ref. 35773], Delapieve et al. 2018:23 [ref. 35713], Reis et al. 2020:466 [ref. 38364], Meza-Vargas et al. 2021:26 [ref. 39298]). Current status: Valid as Otocinclus vittatus Regan 1904. Loricariidae: Hypoptopomatinae. Distribution: South America: Amazon, Orinoco, Paraná/Paraguay, Xingu and Tocantins River basins (Argentina, Bolivia, Brazil, Colombia, Paraguay, Peru and Venezuela). Habitat: freshwater.

xakriaba, Otocinclus Schaefer [S. A.] 1997:79, Figs. 48, 49a [Proceedings of the Academy of Natural Sciences of Philadelphia v. 148; ref. 23213] Rio Pau de Colher, on road between Guanambi and Mutas, 14°12'48"S, 42°49'29"W, rio São Francisco basin, Bahia, Brazil. Holotype: MZUSP 51103. Paratypes: ANSP 171752 (51, 2 c&s), 171756 (24); MCP 16877 (24), 17101 (60); USNM 366720 (6); plus non-type material. Type catalog: Ferraris 2007:275 [ref. 29155]. •Valid as Otocinclus xakriaba Schaefer 1997 -- (Isbrücker 2001:30 [ref. 25653], Britto & Moreira 2002:1067 [ref. 26512], Isbrücker 2002:24 [ref. 27178], Schaefer in Reis et al. 2003:325 [ref. 27061], Axenrot & Kullander 2003:256 [ref. 27393], Ferraris 2007:275 [ref. 29155], Lehmann A. et al. 2010:636 [ref. 31083], Lehmann A. & Reis 2012:61 [ref. 32074] as xakryaba, Delapieve et al. 2018:23 [ref. 35713], Silva et al. 2020:11 [ref. 37809]). Current status: Valid as Otocinclus xakriaba Schaefer 1997. Loricariidae: Hypoptopomatinae. Distribution: South America: São Francisco River basin (Brazil). Habitat: freshwater.