Jane Piton Serra, Francisco Langeani
Hasemania Ellis is a small genus of the Characidae restricted to the rivers of the Crystaline Brazilian Shield. The genus was proposed by Ellis (1911) to include three species, H. melanura Ellis (type species), H. maxillaris Ellis and H. bilineata Ellis, and differed from all other characids primarily in the absence of the adipose fin. Ellis (1911) further defined the genus by having two rows of premaxillary teeth, few or no teeth along the upper angle of the maxillary, an incomplete lateral line, the caudal fin naked, and a frequently larval pectoral fin in small specimens. Hasemania now includes eight species: H. melanura and H. maxillaris, from the rio Iguaçu basin, H. nana (Lütken) from the rio São Francisco basin, H. hanseni (Fowler) from Goiás (precise locality unknown), H. crenuchoides Zarske & Géry, from the upper rio Paraná basin, H. nambiquara Bertaco & Malabarba, from the upper rio Tapajós basin, H. piatan Zanata & Serra, from the rio de Contas basin, and H. kalunga Bertaco & Carvalho, from the upper rio Tocantins.
Quelle: Neotrop. ichthyol., ahead of print Epub Aug 25, 2015