Paramyloplus ternetzi, the pakusi, is a medium to large omnivorous fish of the family Serrasalmidae from South America, where it is found in the east and the northeastern Guiana Shield rivers. It can grow to a length of .
Etymology The fish is named in honor of ichthyologist and naturalist Carl Ternetz (1870–1928), who made extensive collections of fish in French Guiana for the British Museum.
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.