Giant Freshwater Stingray (Himantura chaophraya)



The Giant Freshwater Stingray are native to large rivers and estuaries of Southeast Asia.   The giant freshwater stingray is also found in Indonesia and Malaysia.   Like other stingrays, the Giant Freshwater Stingray\’s also prefers a sandy habitat.

It is one of the largest freshwater fishes in the world, with reports from the Chao Phraya and Mekong Rivers of individuals weighing 1,100–1,300 lbs.   These creatures reach length 16 feet long and 7feet wide.   The Giant Freshwater Stingray has a relatively thin, more or less oval-shaped pectoral fin disk and minute eyes. The snout is very broad with a projecting triangular tip. The whip-like tail measures 1.8–2.5 times the length of the disk and lacks fin folds. The serrated spine on the tail is the largest of any stingray, reaching 15 inches long. It is covered with a sheath of toxic mucus and is capable of piercing bone.   The back is a uniform brown to gray in color. The underside is white, with a distinctive broad, black band edged with small spots around the pectoral and pelvic fins. The tail is black past the spine.

These stingray, like other species, also spend most of their time buried in sandy or muddy bottoms waiting to ambush prey.   It is believed that they feed on clams, river prawn and crabs.

There is still much to learn about this mysterious creature, as it wasn\’t discovered by humans until 1990.


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