elongatus, Serrasalmus Kner [R.] 1858:167 [7] [Sitzungsberichte der Kaiserlichen Akademie der Wissenschaften. Mathematisch-Naturwissenschaftliche Classe v. 32 (no. 22); ref. 18871] Rio Guaporé, Mato Grosso, Brazil. No types known. Possible syntypes: NMW 904 (1), 16240 (1, dry), 16343 (1, day), 16345 (1, dry), 57016 (1). Appeared in more detail in Kner 1860:44 [36 in separate], Pl. 5 (fig. 12) [ref. 7130]. •Valid as Serrasalmus elongatus Kner 1858 -- (Ortega & Vari 1986:9 [ref. 9708], Taphorn 1992:334 [ref. 23654], Machado-Allison 2002:74 [ref. 27640], Jégu in Reis et al. 2003:190 [ref. 27061], Machado-Allison et al. 2009:128 [ref. 30953], Barriga Salazar 2014:108 [ref. 35745], Sarmiento et al. 2014:187 [ref. 35004], DoNascimiento et al. 2017:38 [ref. 35633], Careaga et al. 2020:76 [ref. 37774], Silvano et al. 2020:187 [ref. 38133], Meza-Vargas et al. 2021:17 [ref. 39298], Gallo-Cardozo et al. 2023:[4] [ref. 40628], Ota et al. 2024:424 [ref. 40817], Gallo-Cardozo et al. 2024:15 [ref. 40973]). Current status: Valid as Serrasalmus elongatus Kner 1858. Serrasalmidae: Serrasalminae. Distribution: South America: Amazon and Orinoco River basins (Bolivia, Brazil, Colombia, Ecuador, Peru and Venezuela). Habitat: freshwater.