in malaysia...yes they are commonly sold in fish/aquarium shops. And they are regarded as food for exotic fish like arowanas coz they are said to bring out the beautiful colours of the fish. The ppl overseas are keeping as pets n here we all just feed them to fish. haha. But anyway they are still ncie to keep as pets. Easy to keep too n eat insects. Altho u need to be careful. They can and will sting u..with their legs(no they dun bite u with their mouth or wutever).