nigricauda, Serrasalmo Burmeister [H. K.] 1861:536 [Reise durch die La Plata-Staaten v. 2; ref. 23859] Río Paraná, near Rosario, Argentina. No types known. For English and Spanish translation see Koerber & Litz 2008:5 [ref. 29451]. •See Koerber & Litz 2008:5 [ref. 29451]. •Valid as Serrasalmus nigricauda (Burmeister 1861) -- (Koerber 2011:1 [ref. 31122], Mirande & Koerber 2015:16 [ref. 35117] dubious taxon). •Species inquirenda -- (Ota et al. 2024:429 [ref. 40817]). Serrasalmidae: Serrasalminae. Habitat: freshwater.