New species of Rhyacoglanis (Siluriformes: Pseudopimelodidae) from rio Tocantins basin, northern Brazil

Autor: Oscar A. Shibatta, Marcelo S. Rocha, Renildo R. de Oliveira
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Neotropical Ichthyology, Vol 19, Iss 4 (2021)
Druh dokumentu: article
ISSN: 1982-0224
DOI: 10.1590/1982-0224-2021-0083
Popis: Abstract A new species of Rhyacoglanis is described from the rapids of Jatobal, Pará State, Brazil. This species differs from the congeners by fusing hypurals 3, 4, and 5 (vs. hypural 5 free). It also differs from the other species, except for Rhyacoglanis epiblepsis, by the color pattern with numerous dark spots on the body, short post-cleithral process, rounded pectoral and caudal fins, and incomplete lateral line. This species is known only from the type locality, which is currently flooded by the Tucuruí reservoir.
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