polyochrus, Parotocinclus Schaefer [S. A.] 1988:184, Figs. 1-2 [Copeia 1988 (no. 1); ref. 6236] Río Mawarinuma tributary at Neblina base camp, Territory Federal Amazonas, Venezuela, 0°55'N, 66°10'W, elevation 120 meters. Holotype: AMNH 74482. Paratypes: AMNH 77520 (1). Type catalog: Ferraris 2007:283 [ref. 29155]. •Valid as Parotocinclus polyochrus Schaefer 1988 -- (Burgess 1989:438 [ref. 12860], Schaefer & Provenzano 1993:51 [ref. 20828], Isbrücker 2001:31 [ref. 25653], Ribeiro et al. 2002:223 [ref. 26534], Isbrücker 2002:25 [ref. 27178], Schaefer in Reis et al. 2003:327 [ref. 27061], Ferraris 2007:283 [ref. 29155], Lehmann A. & Reis 2012:62 [ref. 32074], Lehmann A. et al. 2015:48 [ref. 33723], Roxo et al. 2016:131 [ref. 34921], Lehmann A. et al. 2018:590 [ref. 36321], Lehmann A. & Reis 2021:452 [ref. 38354]). •Valid as Rhinotocinclus polyochrus (Schaefer 1988) -- (Reis & Lehmann A. 2022:30 [ref. 39390]). Current status: Valid as Rhinotocinclus polyochrus (Schaefer 1988). Loricariidae: Hypoptopomatinae. Distribution: South America: Baria River drainage, upper Negro River basin, Venezuela. Habitat: freshwater.