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Hasemania piatan, a new characid species (Characiformes: Characidae) from headwaters of Rio de Contas, Bahia, Brazil

2010; Sociedade Brasileira de Ictiologia; Volume: 8; Issue: 1 Linguagem: Inglês

10.1590/s1679-62252010000100003

ISSN

1982-0224

Autores

Angela Maria Zanata, Jane Piton Serra,

Tópico(s)

Fish Ecology and Management Studies

Resumo

Hasemania piatan is described from the upper rio de Contas drainage, Bahia, northeastern Brazil. It can be easily distinguished from its congeners by having 18 principal caudal-fin rays. The new species differs further from congeners by a combination of seven branched dorsal-fin rays, six branched pelvic-fin rays, anal-fin base not covered by scales, presence of only five infraorbitals, and presence of a humeral blotch. It also can be distinguished by having 10-13 branched anal-fin rays, 27-32 scales on longitudinal series, 10-12 circumpeduncular scales, and one to three maxillary teeth.

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