A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins

  • Bertaco V
  • Malabarba L
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Abstract

A new species of characid, Hyphessobrycon hamatus, is described from the upper rio Tocantins, Goiás, Brazil. The new species is distinguished from all other Hyphessobrycon species by the presence of bony hooks on dorsal, anal, pelvic, and pectoral fins of males, the two black humeral spots, the 4 or 5 teeth in the inner series of the premaxilla, a maxilla with 2-3 teeth, the iii-v, 16-18 anal-fin rays, and a lateral line with 10-32 perforated scales and 33-35 scales in a longitudinal series.Uma nova espécie de caracídeo, Hyphessobrycon hamatus é descrita para os tributários do alto rio Tocantins, Goiás, Brasil. A nova espécie distingue-se das demais espécies de Hyphessobrycon pela presença de ganchos nos raios das nadadeiras dorsal, anal, pélvica e peitoral dos machos, duas manchas umerais pretas verticalmente alongadas, 4-5 dentes na série interna do pré-maxilar, 2-3 dentes no maxilar, 16-18 raios ramificados na nadadeira anal, 10-32 escamas perfuradas na linha lateral, e 33-35 escamas em uma série longitudinal.

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APA

Bertaco, V. A., & Malabarba, L. R. (2005). A new species of Hyphessobrycon (Teleostei: Characidae) from the upper rio Tocantins drainage, with bony hooks on fins. Neotropical Ichthyology, 3(1), 83–88. https://doi.org/10.1590/s1679-62252005000100004

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