1. Different species: halibut, also known as flounder, is a kind of flounder, and flounder is a kind of fish of Echinotidae.
2. Different colors: the color of butterfly fish is relatively light, and the color of plaice fish is relatively bright, which is a very bright seawater ornamental fish.
3. Different eyes: the eyes of butterfly fish are on one side of the body, while the eyes of sole fish are on both sides.
4. Different habits: Onion mainly eats some fish and shrimp, while sole mainly eats some algae and coral.
5. The flounder is a kind of flounder family, which grows in Canadian deep-sea waters and distributes from Labrador Peninsula to Schabik Bay in the northwest Atlantic Ocean. Its habitat depth is 57-364 meters and its body length can reach 64 cm. It can be used as edible fish and is suitable for steaming, stewing, roasting and frying.