Hyphessobrycon vanzolinii, a new species from rio Tapajós, Amazon basin, Brazil (Characiformes: Characidae)

Flávio. C. T. Lima and Nelson Flausino Junior

aqua International Journal of Ichthyology,  pp. 89-95, Volume 22 issue 2, 18 April 2016


Hyphessobrycon vanzolinii, new species, is described from the rio Tapajós, Amazon basin, Pará state, Brazil. The new species can be diagnosed from all its congeners by its unique colour pattern, consisting of a longitudinal, broad, diffuse dark midlateral stripe extending from the snout through the orbit to the base of the middle caudal fin rays, dark pigmentation on the last unbranched ray and first to second branched rays of the dorsal fin, a distal dark stripe along the margin of the anal fin, and the presence of dark pigmentation along the distal margin of the caudal fin. Remarks on the putative relationships of the new species, as well as about the threat posed by a large dam to be build exactly at the only site from where Hyphessobrycon vanzolinii is so far known, are presented.

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