melanochrous, Hemigrammus Fowler [H. W.] 1913:543, Fig. 12 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 65; ref. 1389] Rio Madeira tributary, near Porto Velho, Brazil. Holotype: ANSP 39228. Paratypes: ANSP 39229 (1). Type catalog: Böhlke 1984:51 [ref. 13621]. •Valid as Hemigrammus melanochrous Fowler 1913 -- (Lima & Oyakawa in Reis et al. 2003:132 [ref. 27061], Carvalho et al. 2010:253 [ref. 30862], DoNascimiento et al. 2017:48 [ref. 35633]). Current status: Valid as Hemigrammus melanochrous Fowler 1913. Acestrorhamphidae: Pristellinae. Distribution: Amazon River basin: Brazil and Colombia. Habitat: freshwater.