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Issue: Vol. 5448 No. 4: 14 May 2024
Type: Article
Published: 2024-05-14
DOI: 10.11646/zootaxa.5448.4.4
Page range: 508-518
Abstract views: 114
PDF downloaded: 6

A new species of the electric fish Microsternarchus Fernández-Yépez 1968 (Gymnotiformes: Hypopomidae) from the lower Amazon basin, Brazil

Programa de Pós-Graduação em Ecologia Aquática e Pesca—PPGEAP; Universidade Federal do Pará; Av. Perimetral; 2651; Terra Firme; 66077-830 Belém; PA; Brazil
Coordenação de Zoologia; Ictiologia; Museu Paraense Emílio Goeldi; Av. Magalhães Barata; 376; São Braz; Belém; PA; Campus de Pesquisa; CP; 399 CEP 66040-170; Brazil; Programa de Pós-Graduação em Biodiversidade e Evolução (PPGBE/MPEG); Av. Magalhães Barata; 376; Belém; CEP 66040-170; Brazil
Instituto de Estudos Costeiros de Bragança; Universidade Federal do Pará; Alameda Leandro Ribeiro; Aldeia; 68600-000; Bragança; PA; Brazil
Universidade Federal Rural da Amazônia; Travessa Pau Amarelo; Vila Nova; 68650-000; Capitão Poço; PA; Brazil
Programa de Pós-Graduação em Biodiversidade e Evolução (PPGBE/MPEG); Av. Magalhães Barata; 376; Belém; CEP 66040-170; Brazil
Instituto de Estudos Costeiros de Bragança; Universidade Federal do Pará; Alameda Leandro Ribeiro; Aldeia; 68600-000; Bragança; PA; Brazil; Núcleo de Ecologia Aquática e Pesca da Amazônia—NEAP; Universidade Federal do Pará; Av. Perimetral; 2651; Terra Firme; 66077-830 Belém; PA; Brazil
Pisces Amazonian ichthyofauna Taxonomy gymnotiforms new taxon

Abstract

A new species of Microsternarchus is described from clear water streams in the lower Rio Amazonas basin, Brazil, increasing the known species in the genus to three. The new species is distinguished from congeners by a unique set of characters including an elongated caudal filament (35.1–36.8% of the total length) and distinct irregular suborbital blotches. A dichotomous key to the species of Microsternarchus is provided.

 

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