New species of Astyanax (Ostariophysi: Characiforms: Characidae) from the Upper Rio Paraná System, Brazil.

Author(s)

Vari, Richard P. ; Castro, Ricardo M. C. ^[2]

• Document type: Journal article
• Source: Copeia; v. 1, p. 150-162, Feb. 2007.
• Field of knowledge: Biological Sciences - Zoology

Abstract

Astyanax bockmanni, a new species of characid, is widespread in streams in the upper Rio Paraná system of central, southeastern, and southern Brazil. Samples of the species were identified by previous authors as A. eigenmanniorum, a species originally described from far southern Brazil. Astyanax bockmanni differs from A. eigenmanniorum and all congeners in the combination of morphometric, meristic, and pigmentary features and details of oral dentition. Uncertainties concerning the generic placement of Astyanax paranahybae are discussed, and it is proposed that the species is a member of a clade within the Characidae that does not include Astyanax. (AU)

• FAPESP's process: 04/09219-6 - Phylogenetic relationships in Characidae (Ostariophysi:Characiforms)
• Grantee: Ricardo Macedo Corrêa e Castro
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 98/05072-8 - Fish diversity of the headwaters and streams of the Upper Paraná River System in the State of São Paulo, Brazil
• Grantee: Ricardo Macedo Corrêa e Castro
• Support Opportunities: BIOTA-FAPESP Program - Thematic Grants