orthacanthus, Opsodoras Eigenmann [C. H.] 1925:351, Pls. 22 (fig. 3), 23 (fig. 2) [Transactions of the American Philosophical Society (New Series) v. 22 (pt 5); ref. 1244] Iquitos, Lake Cashiboya, mouth of Río Pacaya, Peru. Holotype: CAS 60231 [ex IU 15884]. Paratypes: CAS 60232 [ex IU 15885] (4), CAS 60233 [ex IU 15886] (3). Type catalog: Ferraris 2007:175 [ref. 29155]. •Valid as Opsodoras orthacanthus Eigenmann 1925 -- (Ortega & Vari 1986:13 [ref. 9708], Burgess 1989:222 [ref. 12860]). •Synonym of Opsodoras stuebelii (Steindachner 1882) -- (Sabaj & Ferraris in Reis et al. 2003:463 [ref. 27061], Ferraris 2007:175 [ref. 29155]). •Synonym of Hemidoras stuebelii (Steindachner 1882). Current status: Synonym of Hemidoras stuebelii (Steindachner 1882). Doradidae: Doradinae. Habitat: freshwater.