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Moenkhausia rubra, a new species from rio Juruena, upper rio Tapajós basin, Brazil (Characiformes: Characidae)

2014; Sociedade Brasileira de Ictiologia; Volume: 12; Issue: 2 Linguagem: Inglês

10.1590/1982-0224-20130183

ISSN

1982-0224

Autores

Murilo Nogueira de Lima Pastana, Fernando César Paiva Dagosta,

Tópico(s)

Fish Ecology and Management Studies

Resumo

Moenkhausia rubra, new species, is described from the upper rio Juruena, rio Tapajós basin, Mato Grosso, Brazil. The new species is distinguished from its congeners, except M. hemigrammoidesand M. nigromarginata, by the dark pigmentation on the anteriormost rays of both dorsal and anal fins. Moenkhausia rubrais distinguished from the aforementioned species by the number of branched anal-fin rays 17-20 (vs. 20-25), presence of a dark blotch on the caudal peduncle extending to middle caudal-fin rays, absence of longitudinal black zigzag stripes between longitudinal rows of scales on body, and other details of coloration.

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