nigricans, Serrasalmo Spix [J. B. von] & Agassiz [L.] 1829:72, Pl. 30 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Equatorial rivers of Brazil [= lower Amazon basin]. No types known. •Species of Serrasalmus -- (Fink 1993:670 [ref. 20937]). •Valid as Serrasalmus nigricans Spix & Agassiz 1829 -- (Jégu in Reis et al. 2003:191 [ref. 27061] with author as Agassiz). •Species inquirenda -- (Ota et al. 2024:429 [ref. 40817]). Serrasalmidae: Serrasalminae. Habitat: freshwater.