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.