t is located in the northern part of Chile, between the Coastal Cordillera (a coastal chain of the Andes in Chile) and the Western Cordillera (a mountain range in western Colombia, part of the Andes).
In 2011, researchers discovered two new species of freshwater stingrays in the Amazon River.
The Heliotrygon (rosai and gomesi), commonly referred to as the Pancake stingrays, is the first new genus of stingrays from the Amazon described since 1987.