A new species of Tetragonopterus Cuvier, 1816 (Characiformes, Characidae, Tetragonopterinae) from the upper rio Araguaia, Central Brazil

Silva, Gabriel S. C. [UNESP]; Benine, Ricardo C. [UNESP]

A new species of Tetragonopterus Cuvier, 1816 (Characiformes, Characidae, Tetragonopterinae) from the upper rio Araguaia, Central Brazil

Data

2011-06-09

Autores

Silva, Gabriel S. C.

Benine, Ricardo C.

Editor

Magnolia Press

Tipo

Artigo

Direito de acesso

Acesso restrito

Resumo

A new characid, Tetragonopterus anostomus, is described from the upper rio Araguaia, Central Brazil. The new species is distinguished from its congeners (T. argenteus, T. carvalhoi, T. chalceus e T. rarus) by traits related to the position of the mouth, number of premaxillary teeth, number of predorsal scales, overall color pattern, and number of gill rakers. A brief discussion on its putative ecomorphological adaptations is provided.