Species that contain: Corydoras and melanistius [ 4 ] records

brevirostris, Corydoras melanistius Fraser-Brunner [A.] 1947:244 [Proceedings of the Zoological Society of London v. 117 (pt 1); ref. 13085] Orinoco River, Venezuela (aquarium specimen). Holotype (unique): BMNH 1946.10.10.1. Type catalog: Ferraris 2007:114 [ref. 29155]. •Synonym of Corydoras melanistius Regan 1912, but a valid subspecies as described -- (Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:366 [ref. 12860], Grant 1998:43 [ref. 23454]). •Valid as Corydoras brevirostris Fraser-Brunner 1947 -- (Le Bail et al. 2000:192 [ref. 24549] as cf. brevirostris, Isbrücker 2001:222 [ref. 26805], Reis in Reis et al. 2003:296 [ref. 27061], Ferraris 2007:114 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[12] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], DoNascimiento et al. 2017:72 [ref. 35633], Koerber et al. 2022:47 [ref. 39235]). Current status: Valid as Corydoras brevirostris Fraser-Brunner 1947. Callichthyidae: Corydoradinae. Distribution: South America: Orinoco River basin and coastal drainages in Suriname (Brazil, Colombia, Suriname and Venezuela). Habitat: freshwater.

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.

melanistius, Corydoras Regan [C. T.] 1912:216 [Annals and Magazine of Natural History (Series 8) v. 10 (no. 56); ref. 14865] Essequibo River, Guyana. Lectotype: BMNH 1864.1.21.86. Paralectotypes: BMNH 1864.1.21.87 (1). Type catalog: Ferraris 2007:120 [ref. 29155]. Lectotype selected by Nijssen & Isbrücker 1967:32 [ref. 7981]. •Valid as Corydoras melanistius Regan 1912 -- (Ovchynnyk 1967:37 [ref. 37559], Nijssen & Isbrücker 1980:197 [ref. 6910], Burgess 1989:366 [ref. 12860], Isbrücker 2001:229 [ref. 26805], Reis in Reis et al. 2003:299 [ref. 27061], Ferraris 2007:120 [ref. 29155], Tencatt & Pavanelli 2015:294 [ref. 35434], Tencatt & Ohara 2016:[13] [ref. 34353], Tencatt & Evers 2016:[11] [ref. 34387], Tencatt et al. 2016:[17] [ref. 34388], Ottoni et al. 2016:133 [ref. 34756], DoNascimiento et al. 2017:73 [ref. 35633], Tencatt et al. 2023:20 [ref. 40562]). Current status: Valid as Corydoras melanistius Regan 1912. Callichthyidae: Corydoradinae. Distribution: South America: coastal rivers of French Guiana, Guyana and Suriname, ? Venezuela and Colombia. Habitat: freshwater.

wotroi, Corydoras Nijssen [H.] & Isbrücker [I. J. H.] 1967:44, Pl. 5 (fig. 3) [Zoologische Mededeelingen (Leiden) v. 42 (no. 5); ref. 7981] Outlet of Kleine Saramacca River, Saramacca River system, Brokopondo, Suriname. Holotype: RMNH 25331. Paratypes: RMNH 25332 (2), ZMA 104641 (1). Type catalog: Nijssen et al. 1982:51 [ref. 19236], Provenzano et al. 1998:6 [ref. 24196], Ferraris 2007:120 [ref. 29155]. See Grant 1998:43 [ref. 23454]. •Synonym of Corydoras melanistius Regan 1912, subspecies brevirostris Fraser-Brunner 1947 -- (Nijssen & Isbrücker 1980:197 [ref. 6910]). •Status uncertain -- (Isbrücker 2001:237 [ref. 26805]). •Synonym of Corydoras melanistius Regan 1912 -- (Reis in Reis et al. 2003:300 [ref. 27061], Ferraris 2007:120 [ref. 29155]). Current status: Synonym of Corydoras melanistius Regan 1912. Callichthyidae: Corydoradinae. Habitat: freshwater.