South America: rio Uruguay drainage.
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Malabarba, L.R. and S.H. Weitzman 2003 Description of a new genus with six new species from southern Brazil, Uruguay and Argentina, with a discussion of a putative characid clade (Teleostei: Characiformes: Characidae). Comun. Mus. Cienc. Tecnol. PUCRS, Ser. Zool. 16(1):67-151. (Ref. 55830)
http://www.fishbase.org/references/FBRefSummary.php?id=55830&speccode=61981
