longirostris, Corydoras melanistius Hoedeman [J. J.] 1953:17, Fig. 13 [Encyclopaedie voor den aquariumhouder; ref. 19665] Amazon area. Holotype: A.G. 92/139 (lost). Type catalog: Ferraris 2007:113 [ref. 29155]. Types not preserved (Nijssen & Isbrücker 1980:194 [ref. 6910]). Dated 1953 by Hoedeman 1954:264 [ref. 35345]. •Synonym of Corydoras ambiacus Cope 1872 -- (Nijssen & Isbrücker 1980:194 [ref. 6910], Isbrücker 2001:220 [ref. 26805], Reis in Reis et al. 2003:294 [ref. 27061], Ferraris 2007:113 [ref. 29155]). Current status: Synonym of Corydoras ambiacus Cope 1872. Callichthyidae: Corydoradinae. Habitat: freshwater.