Type locality is ‘Amazon River near Tabatinga, Amazonas, Brazil’. Tabatinga is a municipality in the Três Fronteiras region where the borders of Brazil, Peru, and Colombia meet, but this species’ wider distribution is unclear.
Records exist from the Río Nanay, more than 200 kilometres upstream of the type locality, so it appears to range at least as far as the city of Iquitos in Loreto Regio, Peru, but distribution is usually given as ‘Amazon River basin near border of Brazil and Peru’.
Peaceful and gregarious. Should be maintained in a group of at least 4-6 individuals.