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A new species of Characidium Reinhardt (Characiformes: Crenuchidae) from the Río Huallaga, central Peruvian Amazon, with a review of secondary sexual characters in the genus
Author(s) -
Teixeira Tulio F.,
Melo Marcelo R. S.
Publication year - 2021
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.14568
Subject(s) - characiformes , biology , amazon rainforest , sexual dimorphism , zoology , clade , amazon basin , genus , ecology , fishery , phylogenetics , fish <actinopterygii> , biochemistry , gene
Characidium pumarinri n. sp. is described from the affluents of Río Huallaga, a tributary of Río Marañón that drains the eastern slopes of the Andes, in the Peruvian Amazon. The new species has a deep body (24–31% in L S ), 11–17 well‐marked dark bars and remarkable sexual dimorphism related to colour pattern, in which males have darker anal, dorsal, pectoral and pelvic fins than females. C. pumarinri resembles some species allocated in Clade C4, mainly by having a high number of transversal bars and a deep body. In addition, a thorough review and further descriptions of the secondary sexual characteristics in Characidium are provided.