ortoni, Sorubimichthys Gill [T. N.] 1870:94 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 22; ref. 17630] Río Marañon or Río Napo, Amazon system, Peru or Ecuador. Holotype (unique): USNM 8238. Type catalog: Ferraris & Vari 1992:38 [ref. 19771], Ferraris 2007:343 [ref. 29155]. •Synonym of Sorubimichthys planiceps (Spix & Agassiz 1829) -- (Lundberg & Littmann in Reis et al. 2003:443 [ref. 27061], Ferraris 2007:343 [ref. 29155], Grant 2021:137 [ref. 38702]). Current status: Synonym of Sorubimichthys planiceps (Spix & Agassiz 1829). Pimelodidae. Habitat: freshwater.