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Issue: Vol. 5361 No. 1: 31 Oct. 2023
Type: Article
Published: 2023-10-31
DOI: 10.11646/zootaxa.5361.1.5
Page range: 103-113
Abstract views: 519
PDF downloaded: 14

A new tiny-spotted species of Hypostomus (Siluriformes: Loricariidae) from the upper Rio Tocantins basin, Goiás State, Brazil

Universidade Estadual de Maringá. Programa de Pós-Graduação em Biologia Comparada; Av. Colombo; 5790; 87020–900; Maringá; Paraná State; Brazil
Universidade Federal de Minas Gerais. Instituto de Ciências Biológicas. Laboratório de Ecologia de Peixes; Av. Presidente Antônio Carlos; 6627; 31270–901; Belo Horizonte; Minas Gerais State; Brazil; Museu de Ciências Naturais da PUC Minas; Av. Dom José Gaspar; 290; 30535–610; Belo Horizonte; Minas Gerais State; Brazil
Universidade Estadual de Maringá. Departamento de Biologia. Núcleo de Pesquisas em Limnologia; Ictiologia e Aquicultura (Nupélia); Av. Colombo; 5790; 87020–900; Maringá; Paraná State; Brazil
Pisces armored catfish Hypostominae Neotropical fishes taxonomy

Abstract

Scientific visits to ichthyological collections revealed a potentially new species of Hypostomus from the Rio Tocantins basin. From there, subsequent ichthyological surveys led us to capture the taxon in the upper portion of this basin and address it to the H. punctatus group. Here, we present it as a new species to science. The new species is distinguished from its congeners, except those from the H. punctatus group, by having bicuspid teeth with elliptic medial cusps, moderate keels on the head and flanks, small spots on the body, and caudal peduncle that are long and low. From the H. punctatus group, except H. subcarinatus and H. commersoni, it differs by having extremely small dark spots; from H. subcarinatus, it differs by having a beige-brown dorsal-fin background color versus blue in live specimens; and from H. commersoni, it differs by having a short to moderate dorsal fin versus a long dorsal fin.

 

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