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BIBTEX RIS

Austrolebias paucisquama (Cyprinodontiformes: Rivulidae), a new species of annual killifish from southern Brazil

2008; Sociedade Brasileira de Ictiologia; Volume: 6; Issue: 2 Linguagem: Inglês

10.1590/s1679-62252008000200004

ISSN

1982-0224

Autores

Juliano Ferrer, Luiz Roberto Malabarba, Wilson J. E. M. Costa,

Tópico(s)

Fish Ecology and Management Studies

Resumo

Austrolebias paucisquama is described from the rio Vacacaí drainage, a tributary to the rio Jacuí, Rio Grande do Sul, Brazil. The new species belongs to the Austrolebias alexandri species-group, by sharing the apomorphic bright blue iridescence and dark gray pectoral fins in males. It is distinguished from other species of this group by having fewer scales around caudal peduncle (12) and fewer dorsal-fin rays in males (17-21). The lack of contact organs on the inner surface of the pectoral fin in males and the color pattern of females - ground color light brownish, sides of body with a variable number of relatively large dark black spots distributed mostly on posterior portion of body - distinguish A. paucisquama from all other species of the genus.

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