New Myloplus from Essequibo River basin, Guyana, with discussion on the taxonomic status of Myleus pacu (Characiformes: Serrasalmidae)

Autor: Marcelo C. Andrade, Hernán López-Fernández, Elford A. Liverpool
Jazyk: angličtina
Rok vydání: 2019
Předmět:
Zdroj: Neotropical Ichthyology, Vol 17, Iss 4 (2019)
Druh dokumentu: article
ISSN: 1982-0224
DOI: 10.1590/1982-0224-20190026
Popis: ABSTRACT A new species in the serrasalmid genus Myloplus is described from the middle Mazaruni River, Essequibo River basin, Guyana. The new species is similar to Myleus pacu and Myloplus planquettei in its silver to purplish black coloration and its overall morphology, and has a putative syntopic distribution with those species. The new species is, however, readily distinguishable from the other two by meristic counts of the unpaired fins and by differences in color pattern, primarily in males. Additionally, we provide comments on Myleus pacu and other species that have been confounded under that name.
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