A new species of Bryconops (Teleostei: Characidae) from the rio Madeira basin, Northern Brazil

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Abstract

A new species of Bryconops is described from a tributary to the rio Madeira in the Amazon basin, State of Rondônia, Brazil. Bryconops piracolina belongs to the subgenus Bryconops by having no teeth or rarely one tooth in the maxilla, and a naked area on cheek between the second and third infraorbitals. The new species is distinguished from all species of this subgenus by the presence of a large black blotch on dorsal-fin base. Furthermore, it is distinguished from all congeners, except B. inpai, by possessing the adipose fin entirely black. It differs from B. inpai by the lack of humeral spots. It further differs from all species of the subgenus Bryconops, except B. caudomaculatus, by having the last scales of the longitudinal series of scales that bears the lateral line series not pored beyond the end of the hypural plate, and differs from B. caudomaculatus by the smaller number of pored lateral line scales (31-36, mean 34.6, vs. 37-43, mean = 40.6, respectively). © 2011 Sociedade Brasileira de Ictiologia.

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Wingert, J. M., & Malabarba, L. R. (2011). A new species of Bryconops (Teleostei: Characidae) from the rio Madeira basin, Northern Brazil. Neotropical Ichthyology, 9(3), 471–476. https://doi.org/10.1590/S1679-62252011000300002

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