orinoco, Ochmacanthus Myers [G. S.] 1927:130 [Bulletin of the Museum of Comparative Zoology v. 68 (no. 3); ref. 3096] Playa Matepalma, Orinoco River system, Venezuela. Holotype (unique): CAS 76355 [ex IU 17698]. Type catalog: Ferraris 2007:410 [ref. 29155]. •Valid as Ochmacanthus orinoco Myers 1927 -- (Burgess 1989:324 [ref. 12860], de Pinna & Wosiacki in Reis et al. 2003:276 [ref. 27061], Ferraris 2007:409 [ref. 29155], DoNascimiento 2015:947 [ref. 34078], Neto & de Pinna 2016:[8] [ref. 34386], DoNascimiento et al. 2017:71 [ref. 35633]). Current status: Valid as Ochmacanthus orinoco Myers 1927. Trichomycteridae: Stegophilinae. Distribution: Negro and Orinoco River basins: Brazil, Colombia and Venezuela. Habitat: freshwater.