Description: Bigtooth river stingray (Potamotrygon henlei) at the National Aquarium. Date: 3 February 2008, 17:16. Source: DSC_1410. Author: Christine Schmidt from Laurel, USA.
Description: Bigtooth river stingray (Potamotrygon henlei) at the PPG Aquarium. Date: 6 October 2006, 12:38. Source: Pittsburgh, Pa Zoo. Author: Noel Weathers from Orange, United States of America.
