A new species of Characidium Reinhardt (Characiformes: Crenuchidae) from the Rio Huallaga, central Peruvian Amazon, with a review of secondary sexual characters in the genus

Author(s)

Teixeira, Tulio F. ^[1] ; Melo, Marcelo R. S. ^[2]

Affiliation

^[1] Pontificia Univ Catolica Minas Gerais, Programa Posgrad Biol Vertebrados, Belo Horizonte, MG - Brazil

^[2] Univ Sao Paulo, Inst Oceanog, Sao Paulo - Brazil

• Document type: Review article
• Source: Journal of Fish Biology; v. 98, n. 1 OCT 2020.
• Web of Science Citations: 1

Abstract

Characidium pumarinri n. sp. is described from the affluents of Rio Huallaga, a tributary of Rio Maranon 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. (AU)

• FAPESP's process: 12/01263-2 - Evolution of secondary sexual characters in Characidae (Teleostei: Characiformes)
• Grantee: Tulio Franco Teixeira
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 17/12909-4 - Diversity and evolution of deep-sea fishes: DEEP-OCEAN
• Grantee: Marcelo Roberto Souto de Melo
• Support Opportunities: BIOTA-FAPESP Program - Young Investigators Grants