nigricans, Prochilodus Spix [J. B. von] & Agassiz [L.] 1829:64, Pl. 39 [Selecta genera et species piscium quos in itinere per Brasiliam; ref. 13] Lago Janauacá, along the Rio Solimões, Amazon basin. Neotype: MZUSP 21575. As Pacu nigricans on plate. Neotype designated by Castro & Vari 2003:128 [ref. 28606]. •Valid as Prochilodus nigricans Spix & Agassiz 1829 -- (Ovchynnyk 1967:32 [ref. 37559], Ortega & Vari 1986:11 [ref. 9708], Castro 1993:61 [ref. 21063], Loubens & Panfili 1995:17 [ref. 22314], Castro & Vari in Reis et al. 2003:67 [ref. 27061] with author as Agassiz, Castro & Vari 2003:123 [ref. 28606], Barriga Salazar 2014:105 [ref. 35745], Sarmiento et al. 2014:84, 186 [ref. 35004], DoNascimiento et al. 2017:43 [ref. 35633], Meza-Vargas et al. 2021:15 [ref. 39298], Koerber et al. 2022:26 [ref. 39235], Taphorn et al. 2022:27 [ref. 41297], Castro 2024:400 [ref. 40817] with author as Agassiz). Current status: Valid as Prochilodus nigricans Spix & Agassiz 1829. Prochilodontidae. Distribution: South America: Amazon and Tocantins River basins (Bolivia, Brazil, Colombia, Ecuador, Guyana and Peru). Habitat: freshwater.