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Issue: Vol. 4144 No. 3: 28 Jul. 2016
Type: Article
Published: 2016-07-28
DOI: 10.11646/zootaxa.4144.3.9
Page range: 430–442
Abstract views: 83
PDF downloaded: 1

A new long-snouted species of Corydoras Lacépède, 1803 (Siluriformes: Callichthyidae) from the rio Madeira basin

Universidade Estadual de Maringá. Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, Av. Colombo, 5790, Zona 7, 87020–900 Maringá, Paraná, Brazil.
Museu de Zoologia da Universidade de São Paulo, Av. Nazaré, 481, Ipiranga, Caixa Postal 42494, 04299–970, São Paulo, SP, Brazil.
Pisces Neotropical region Amazon fish Corydoradinae taxonomy

Abstract

A new species of Corydoras is described from the rio Aripuanã, rio Madeira basin, Mato Grosso State, Brazil. The new species can be distinguished from its congeners by the presence of the following features: long mesethmoid, with anterior tip well developed, conspicuously larger than 50% of bone length; posterior margin of dorsal-fin spine with serrations directed towards tip of spine; one to two longitudinal black stripes on flanks; absence of a black blotch across the eyes (mask); absence of a large black blotch on dorsal fin; and transversal black bars on caudal fin. Comments on endemism in interfluvial region between Madeira and Tapajós rivers are briefly discussed.

 

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