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