Distribution and Habitat
Himantura chaophraya was originally described from Thailand (where it occurs in the Chao Phraya, Nan, Mekong, Bangpakong, Prachinburi and Tapi Rivers). The giant freshwater stingray is also found in Indonesia (the Mahakam River Basin in Kalimantan) and Malaysia (the Kinabatangan River in Sabah). There are also records from various other river systems in the region. If all these populations are part of a single species, the name Himantura polylepis is a senior synonym and therefore the valid name. However, the rays across these different regions are likely to be isolated from each other, and it is yet unclear whether they represent populations of the same species or a species complex. It prefers a sandy habitat.
Read more about this topic: Giant Freshwater Stingray
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