Myloplus lobatus is a medium to large omnivorous fish of the family Serrasalmidae from South America, where it is found in the Amazon and Orinoco River basins. It can grow to a length of .
References
Jégu, M., 2003. Serrasalminae (Pacus and piranhas). p. 182–196. In R.E. Reis, S.O. Kullander and C.J. Ferraris Jr. (eds.) Checklist of the Freshwater Fishes of South and Central America. Porto Alegre: EDIPUCRS, Brasil.