Distribution
South America: Atlantic versant rivers from Tramanda? River drainage in Brazil to the Colorado River in Argentina, including the lower Paran? and Uruguay River basins, and Laguna dos Patos drainage. Introduced in Pacific versant rivers of Chile, including Choapa and Quilimari Rivers, Estero Quintero, Estero Catapilco, Estero Casablanca, and Lake Pe?uelas.