The rabbit's long ears, which can be more than 10 cm (4 in) long, are probably an adaptation for detecting predators. They have large, powerful hind legs. The two front paws have 5 toes, the extra called the dewclaw.
However, Moorish idol larvae spend a long time drifting through the open ocean before they mature, so regional populations donât remain isolated enough to develop particular traits. Because of its beauty and its identity as a quintessential reef fish, the Moorish idol is a very popular fish in the aquarium trade.
Quick Answer. Betta fish are native to the Mekong Delta in southeast Asia, a wetland that extends from China to Vietnam. They were first kept as pet fish in Thailand and Malaysia. The common name for bettas is Siamese fighting fish, which comes from Siam, an old name for Thailand. Continue Reading.