Three new Pimelodus species (Siluriformes: Pimelodidae) from the rio Tocantins drainage, Brazil
Three new species of Siluriformes from the rio Tocantins drainage of Brazil are placed in the genus Pimelodus, P. stewarti, P. joannis, and P. halisodous. Pimelodus halisodous differs from the sympatric P. joannis and P. stewarti by the number of premaxillary tooth rows (13-16 vs. 5-9). Pimelodus jo...
| Autor principal: | Ribeiro, Frank Raynner Vasconcelos |
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| Outros Autores: | Lucena, Carlos Alberto Santos de, Lucinda, Paulo H. F. |
| Grau: | Artigo |
| Idioma: | English |
| Publicado em: |
Neotropical Ichthyology
2020
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| Acesso em linha: |
https://repositorio.inpa.gov.br/handle/1/14625 |
| Resumo: |
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Three new species of Siluriformes from the rio Tocantins drainage of Brazil are placed in the genus Pimelodus, P. stewarti, P. joannis, and P. halisodous. Pimelodus halisodous differs from the sympatric P. joannis and P. stewarti by the number of premaxillary tooth rows (13-16 vs. 5-9). Pimelodus joannis differs from P. stewarti by the presence of two dark blotches on the base of the caudal fin. The three new species differ from all other species of Pimelodus by the possession of a uniform gray coloration along flanks; the relatively short distance between the posterior nostril and the anterior orbital border; a short maxillary barbel, that only slightly surpasses the caudal-fin base. Copyright © 2008 Sociedade Brasileira de Ictiologia. |