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Poptella fuscata, a new Stethaprionini from the upper Amazon basin, Peru (Characiformes: Characidae)
James R Garcia-Ayala1, Ricardo C Benine1
1Laboratório de Ictiologia, Setor de Zoologia, Campus de Botucatu, Universidade Estadual Paulista - IBB-UNESP, São Paulo, Brazil.
Abstract:
A new species of Poptella is described from the Río Putumayo, Upper Río Amazon basin, Peru. The new species is distinguished from congeners by having a dense field of dark chromatophores homogeneously spread over the posterior half of the body, posterior humeral blotch extending to three to four horizontal scale rows below the lateral line, and a higher number of branched dorsal-fin rays. The new species can be readily distinguished from P. paraguayensis by having a comparatively shorter predorsal spine.
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