Among the few members of its family restricted to fresh water, the marbled whipray has been reported from Saigon in Vietnam, the Mekong River near Tonle Sap and Phnom Penh in Cambodia, the lower Nan and Chao Phraya Rivers in Thailand, and the Mahakam River in Kalimantan, Indonesia.
•
The marbled whipray (Himantura oxyrhyncha) is a little-known species of stingray in the family Dasyatidae, native to several freshwater rivers in Southeast Asia.