One of these is the bigtooth river stingray (Potamotrygon henlei) which is endemic to the Tocantins-Araguaia River Basin in Brazil. They, like the Xingu River stingray, are black with white/yellow ...

The Mekong River is home to enormous and endangered aquatic life. A 400-pound fish’s release shows how some conservation efforts in Cambodia are paying off.

A 661-pound giant stingray caught in a Cambodian river is believed to be the largest freshwater fish ever encountered by researchers. ... black and white tegu lizard found wandering California park.