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Genus Urogymnus
Thorny freshwater stingray - The roughtail stingray, Dasyatis centroura, is a species of stingray in the family Dasyatidae.
Porcupine ray - The porcupine ray, Urogymnus asperrimus, is a species of stingray in the family Dasyatidae, found in shallow coastal waters throughout the tropical Indo-Pacific and off West Africa.
Thorny freshwater stingray - The pincushion ray or thorny freshwater stingray, Urogymnus ukpam, is a little-known species of stingray in the family Dasyatidae, found in the rivers and lakes of West Africa.
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