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A new miniature species of Priocharax (Teleostei: Characiformes: Characidae) from the Rio Madeira drainage, Brazil, with comments on the adipose fin in characiforms

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Author(s):
Mattox, George M. T. ; Souza, Camila S. ; Toledo-Piza, Monica ; Britz, Ralf ; Oliveira, Claudio
Total Authors: 5
Document type: Journal article
Source: VERTEBRATE ZOOLOGY; v. 70, n. 3, p. 17-pg., 2020-01-01.
Abstract

A new miniature species of the freshwater fish genus Priocharax is described from the Rio Jamari, Rio Madeira drainage, Amazon basin. Priocharax varii sp. n. is the fourth species currently recognized in the genus and shares with the other three the presence of a conspicuous larval pectoral fin in adults, a fully toothed maxilla, a triangular pseudotympanum situated anterior to the fifth vertebra and a tiny size combined with a translucent body. The new species is diagnosed from congeners in having an adipose fin, a unique feature within Priocharax. Molecular identification of the new species and the other valid Priocharax species supports the morphological findings. A brief discussion on the presence/absence of the adipose fin in Characiformes is provided. (AU)

FAPESP's process: 16/09204-6 - Biodiversity and Biogeography in marine-estuarine fishes (Teleostei) from Brazil
Grantee:Claudio de Oliveira
Support Opportunities: Regular Research Grants
FAPESP's process: 14/26508-3 - Phylogeny of the hyperdiverse order Characiformes (Teleostei: Ostariophysi) using ultraconserved elements
Grantee:Claudio de Oliveira
Support Opportunities: Research Projects - Thematic Grants
FAPESP's process: 17/01970-4 - Integrating morphological and molecular data in the taxonomic and phylogenetic study of the miniature fish Priocharax Weitzman & Vari (Teleostei, Characiformes, Characidae)
Grantee:George Mendes Taliaferro Mattox
Support Opportunities: Research Grants - Young Investigators Grants
FAPESP's process: 18/20610-1 - Study of the biogeography of the Brazilian coast using data population genetic data of marine catfish of the genera Cathorops and Genidens
Grantee:Claudio de Oliveira
Support Opportunities: Regular Research Grants
FAPESP's process: 17/06551-0 - Characinae (Actinopterygii: Characiformes: Characidae): molecular identification and interspecific phylogenetic relationships
Grantee:Camila da Silva de Souza
Support Opportunities: Scholarships in Brazil - Doctorate