South America: Rio Xingu and Rio Tapajós basins in Brazil.
- Weitzman, S.H., N.A. Menezes, H.-G. Evers and J.R. Burns 2005 Putative relationships among inseminating and externally fertilizing characids, with a description of a new genus and species of Brazilian inseminating fish bearing an anal-fin gland in males (Characiformes: Characidae). Neotrop. Ichthyol. 3(3):329-360. (Ref. 56937) http://www.fishbase.org/references/FBRefSummary.php?id=56937&speccode=62704
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