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Type: Article
Published: 2022-07-05
Page range: 37-53
Abstract views: 1296
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Geophagus pyrineusi: a new species from the rio Teles Pires, rio Tapajós basin, Brazil (Cichliformes: Cichlidae: Geophagini)

Universidade Estadual de Maringá, Programa de Pós-Graduação em Ecologia de Ambientes Aquáticos Continentais, av. Colombo, 5790, 87020-900 Maringá, PR, Brazil.
Universidade Federal de Rondônia, Laboratório de Ciências Ambientais, av. da Paz, 4376, 76916-000 Presidente Médici, RO, Brazil
Laboratório de Citogenética e Genética Animal, Universidade Federal de Mato Grosso, Instituto de Biociências, Avenida Fernando Correia da Costa, 2367, Bairro Boa Esperança, 78060-900 Cuiabá, Mato Grosso State, Brazil.
Pisces Allochromy Coloration Homology Melanophore Morphology Ontogeny Pigmentation

Abstract

Geophagus pyrineusi, new species, is described from the rio Teles Pires drainage, rio Tapajós basin, Brazil. The new species can be diagnosed from the majority of the congeners by presenting a complete infraorbital bar. Additionally, it differs from all other congeners by several coloration-related character states: flank bars 5 and 6–7 as dark as the infraorbital bar, and almost as dark as the midlateral spot; retention of dorsal melanophoric patch 6 as a distinct mark (not connected to any lateral melanophoric patch), and almost as dark as the midlateral spot in adults; retention of lateral melanophoric patch 1p and almost complete absence of dorsal- and caudal-fin color patterns in adults, among other characters.

 

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