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

This dataset contains the digitized treatments in Plazi based on the original journal article Zanata, Angela M., Serra, Jane P. (2010): Hasemania piatan, a new characid species (Characiformes: Characidae) from headwaters of rio de Contas, Bahia, Brazil. Neotropical Ichthyology 8 (1): 21-26, DOI: 10.1590/S1679-62252010000100003, URL: scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100003&lng=en&tlng=en 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.