Genus Pastinachus

Cowtail stingray - The cowtail stingray, Pastinachus sephen, is a species of stingray in the family Dasyatidae, widespread in the Indo-Pacific region and occasionally entering freshwater habitats.

 
 

Roughnose stingray - Peter Last, B.

Order : Rajiformes
Family : Dasyatidae
Genus : Pastinachus