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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A new Hyphessobrycon (Characiformes: Characidae) of the Hyphessobrycon heterorhabdus species-group from the lower Amazon basin, Brazil

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Author(s):
Tiago C. Faria [1] ; Karen L. A. Guimarães [2] ; Luís R. R. Rodrigues [3] ; Claudio Oliveira [4] ; Flávio C.T. Lima [5]
Total Authors: 5
Affiliation:
[1] Universidade Estadual de Campinas. Museu de Zoologia - Brasil
[2] Universidade Federal do Oeste do Pará. Instituto de Ciências da Educação. Programa de Pós-Graduação em Recursos Naturais da Amazônia - Brasil
[3] Universidade Federal do Oeste do Pará. Instituto de Ciências da Educação. Programa de Pós-Graduação em Recursos Naturais da Amazônia - Brasil
[4] Universidade Estadual Paulista “Júlio de Mesquita Filho”. Instituto de Biociências de Botucatu. Laboratório de Biologia e Genética de Peixes - Brasil
[5] Universidade Estadual de Campinas. Museu de Zoologia - Brasil
Total Affiliations: 5
Document type: Journal article
Source: Neotropical Ichthyology; v. 19, n. 1 2021-03-08.
Abstract

ABSTRACT A new species of Hyphessobrycon belonging to the Hyphessobrycon heterorhabdus species-group from the lower rio Tapajós, state of Pará, Brazil, is described. The new species is allocated into the Hyphessobrycon heterorhabdus species-group due to its color pattern, composed by an anteriorly well-defined, horizontally elongated humeral blotch that becomes diffuse and blurred posteriorly, where it overlaps with a conspicuous midlateral dark stripe that becomes blurred towards the caudal peduncle and the presence, in living specimens, of a tricolored longitudinal pattern composed by a dorsal red or reddish longitudinal stripe, a middle iridescent, golden or silvery longitudinal stripe, and a more ventrally-lying longitudinal dark pattern composed by the humeral blotch and dark midlateral stripe. It can be distinguished from all other species of the group by possessing humeral blotch with a straight or slightly rounded ventral profile, lacking a ventral expansion present in all other species of the group. The new species is also distinguished from Hyphessobrycon heterorhabdus by a 9.6% genetic distance in the cytochrome c oxidase I gene. The little morphological distinction of the new species when compared with its most similar congener, H. heterorhabdus, indicates that the new species is one of the first truly cryptic fish species described from the Amazon basin. (AU)

FAPESP's process: 13/20936-0 - Systematics of tetras (genera Hemigrammus, Hyphessobrycon, Thayeria, Parapristella e Bryconella), with emphasis on the species from northern cis-Andean South America
Grantee:Flávio César Thadeo de Lima
Support Opportunities: Scholarships in Brazil - Young Researchers