Habitat: Benthopelagic; freshwater. Found in coastal creeks, with sandy or muddy floors covered in dead leaves and wood. Distribution: Rio Cricamola, Rio Uyama, Rio Guarumo and Rio Robalo Natural History Notes: Predominantly noctural. Feeds on fish, insects, crustaceans and zooplankton. Equipped with poisoness rays. Sex ratio 2:1 females to males. Depth: 0 - 3m