Two new species of Hyphessobrycon (Teleostei: Characidae) from upper rio Tapajós basin on Chapada dos Parecis, central Brazil

Autor: Tiago Pinto Carvalho, Vinicius Araújo Bertaco
Jazyk: angličtina
Předmět:
Zdroj: Neotropical Ichthyology, Vol 4, Iss 3, Pp 301-308
Druh dokumentu: article
ISSN: 1982-0224
1679-6225
DOI: 10.1590/S1679-62252006000300001
Popis: Two new species of Hyphessobrycon are described from the upper rio Tapajós basin, Mato Grosso, Brazil. Hyphessobrycon melanostichos is distinguished from its congeners by the combination of a conspicuous longitudinal broad black band beginning on the posterior margin of orbit and reaching the tip of middle caudal fin rays, a distinct vertically elongate humeral spot, and 16 to 18 branched anal-fin rays. Hyphessobrycon notidanos is distinguished from its congeners by the combination of an elongate dorsal fin in mature males, a vertically elongate humeral spot, 2-4 maxillary teeth, iii,8 dorsal-fin rays, and 16 to 21 branched anal-fin rays.
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