A new species of Moenkhausia from the rio Amazonas and rio Orinoco basins (Characiformes: Characidae)

• Author(s): Marinho, Manoela M. F. ; Langeani, Francisco [UNESP]
• Date: 2022
• Persistent ID: http://hdl.handle.net/11449/226022
• Origin: Oasisbr
• Subject(s): Bony hooks; Moenkhausia lepidura species-group; Systematics
• Document Type: Journal article
• Language: English

Description

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A new species of Moenkhausia is described from the rio Amazonas and rio Orinoco basins. The new species can be distinguished from congeners mainly by the combination of a conspicuous, relatively small and circular humeral spot, a black spot on the upper caudal-fin lobe, lower caudal-fin lobe without spot or a faint one, and middle caudal-fin rays hyaline or with dark tips. Mature males have a unique combination of two large-sized bony hooks on the anal-fin rays and tiny spines on the distal portion of all fins, which distinguishes the new species from any other species of Characidae. Copyright © 2010.

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UNESP - Universidade Estadual Paulista Laboratório de Ictiologia Departamento de Zoologia e Botânica, Rua Cristóvão Colombo, 2265, São José do Rio Preto, SP CEP 15054-000