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The giant freshwater stingray (Urogymnus polylepis, also widely known by the junior synonym Himantura chaophraya) is a species of stingray in the family Dasyatidae.It is found in large rivers and estuaries in Southeast Asia and Borneo, though historically it may have been more widely distributed in South and Southeast Asia.
The type specimen is an immature male 23 cm (9.1 in) across, caught from the Mekong in Chiang Rai Province, Thailand. [2] A 1999 phylogenetic analysis, based on cytochrome b sequences, found that the Mekong freshwater stingray is closely related to an undescribed dasyatid species from the Gulf of Thailand. [3]
The roughback whipray (Fluvitrygon kittipongi) is a rare species of freshwater stingray in the family Dasyatidae, found over sandy bottoms in the Mae Klong and Chao Phraya Rivers of Thailand. Growing no more than 29 cm (11 in) across, this small ray has an oval pectoral fin disc and a whip-like tail without fin folds.
The Mekong River in Cambodia regularly produces 13-foot giant stingrays, scientists confirm. This is how. How the World’s Largest Freshwater Fish Grew to a Whopping 660 Pounds
The white-edge freshwater whipray (Fluvitrygon signifer) is an extremely rare species of stingray in the family Dasyatidae, native to four river systems in Southeast Asia. Measuring up to 60 cm (24 in) across, this ray has an oval pectoral fin disc and a very long, whip-like tail without fin folds.
Giant freshwater stingray Jeremy Wade ventures to the Mekong River in Thailand to find what may be the largest freshwater fish: the giant freshwater stingray. Armed with a 10-inch, venom-coated barb, this fish grows to 16 feet long and its venom has no known antidote.
For over a hundred million years, the stingray has roamed the world's oceans as an almost mythological animal: extraordinarily graceful, yet potentially lethal.
A fisherman in Cambodia is going to need a bigger boat after catching what researchers have identified as the largest-ever freshwater fish. ‘World’s largest’ 661-pound freshwater fish caught ...