The Serrasalmidae (Pisces, Characoidei) from the Serra do Roncador, Mato Grosso, Brasil

Abstract

Systematic account of the Fishes of the family Serrasalmidae (Characoidei, Cypriniformes) from the upper drainages of the Rios Araguaia and Xingu in Brazil, collected in 1968 by R.H. LOWE-McCONNELL, R. MILLS and J. GREEN. Eight species of the subfamily Myleinae are described, namely Myleus rubripinnis, M. schomburgki and a third unnamed species (that might be new to science), the rare Utiaritichthys sennaebragae and Acnodon normani (first collecting since the description of the types) and 3 Metynnis-species. Four species of the subfamily Serrasalminae are described: Serrasalmus striolatus ssp. (that has been compared with topotypical specimens of S. striolatus), S. humeralis (represented by topotypical individuals, which permitted an extended definition of the species), a geographic form of the common S. rhombeus and S. gibbus, an almost forgotten species that is tentatively restored