A new Moenkhausia (Characiformes: Characidae) from rio Braço Norte, rio Tapajós basin, with comments on the fish endemism of Serra do Cachimbo plateau

Author(s)

De Lima, Arthur ; Vita, George ; Dutra, Guilherme M. ; Ohara, William M. ; Pastana, Murilo N. L.

• Document type: Journal article
• Source: Zootaxa; v. 5330, n. 4, p. 11-pg., 2023-08-17.

Abstract

A new species of Moenkhausia is described from the rio Bravo Norte, a tributary of Rio Teles Pires draining the Serra do Cachimbo, rio Tapajos basin, Para, Brazil. The new species is diagnosed from all congeners, except M. moisae and M. pirauba, by having a high number of scales in the longitudinal series (43-46 vs. 23-41 in other Moenkhausia species). It can also be distinguished from the aforementioned species based on the combination of the following characters: a single humeral blotch, 21-25 branched anal-fin rays, and a round and symmetrical caudal blotch not continuous anteriorly with the dark midlateral stripe. The new tetra herein described represents an additional, possibly endemic, taxon from the headwaters from Serra do Cachimbo, in the Brazilian Shield. (AU)

• FAPESP's process: 13/22473-8 - Endemism and biogeographic analysis of fishes from Madeira River basin
• Grantee: Willian Massaharu Ohara
• Support Opportunities: Scholarships in Brazil - Doctorate
• FAPESP's process: 16/19075-9 - Diversity and evolution of Gymnotiformes (Teleostei, Ostariophysi)
• Grantee: Naercio Aquino Menezes
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 18/09445-9 - Systematics of the electric fishes of the genus Eigenmannia Jordan & Evermann (Gymnotiformes: Sternopygidae): an integrated approach to morphological and molecular data
• Grantee: Guilherme Moreira Dutra
• Support Opportunities: Scholarships in Brazil - Post-Doctoral