altus, Pygocentrus Gill [T. N.] 1870:93 [Proceedings of the Academy of Natural Sciences of Philadelphia v. 22; ref. 17630] Río Marañon or Río Napo, Amazon system, Peru or Ecuador. Holotype: USNM 21432. Type catalog: Vari & Howe 1991:36 [ref. 19022]. •Synonym of Pygocentrus nattereri Kner 1858 -- (Fink 1993:679 [ref. 20937], Jégu in Reis et al. 2003:189 [ref. 27061], Litz & Koerber 2014:10 [ref. 33622], Mirande & Koerber 2015:16 [ref. 35117], Koerber et al. 2017:23 [ref. 35267], Ota et al. 2024:421 [ref. 40817]). Current status: Synonym of Pygocentrus nattereri Kner 1858. Serrasalmidae: Serrasalminae. Habitat: freshwater.