marginatus, Serrasalmus Valenciennes [A.] 1837:Pl. 10 (fig. 1) [Voyage dans l'Amérique méridionale; ref. 20720] Rio Paraná, Brazil. Syntypes [incorrect]: MNHN A-9734 (3). Type catalog: Bertin 1948:25 [ref. 19577]. Name available from plate, description in Valenciennes 1847:10 [ref. 5010] as Serrasalme marginatus. Pl. 10 dates to 1837. The figured specimen is the holotype. •Valid as Serrasalmus marginatus Valenciennes 1837 -- (Ovchynnyk 1967:30 [ref. 37559], Gómez & Chebez 1996:51 [ref. 23791], Sverlij et al. 1998:22 [ref. 27632] dated 1847, Britski et al. 1999:66 [ref. 24147], Jégu in Reis et al. 2003:191 [ref. 27061] dated 1837, López et al. 2003:32 [ref. 27366], Menni 2004:78 [ref. 28131], Machado-Allison et al. 2009:128 [ref. 30953], Litz & Koerber 2014:10 [ref. 33622], Sarmiento et al. 2014:187 [ref. 35004], Mirande & Koerber 2015:16 [ref. 35117], Nión et al. 2016:28 [ref. 35565], Koerber et al. 2017:24 [ref. 35267], Reis et al. 2020:463 [ref. 38364], Gallo-Cardozo et al. 2023:[4] [ref. 40628], Loureiro et al. 2023:38 [ref. 40506], Ota et al. 2024:426 [ref. 40817], Gallo-Cardozo et al. 2024:18 [ref. 40973]). Current status: Valid as Serrasalmus marginatus Valenciennes 1837. Serrasalmidae: Serrasalminae. Distribution: South America: Paraguay-Paraná River basin (Argentina, Brazil, Bolivia, Paraguay and Uruguay). Habitat: freshwater.