2. Flounder, also called flounder, lives on the sandy bottom of shallow sea and preys on small fish and shrimp. They are especially suitable for benthic organisms on the sea floor. Because their bodies are flat. Both eyes are on the upward side of the body, and the color of this side matches well with the surrounding environment; Their downward side is white. Flatfish has extremely fine scales on its body surface. The flounder has only one dorsal fin, extending almost from the head to the caudal fin. They mainly live in temperate waters and are important economic fish in temperate waters. The "iron chest" commonly used in Chaoshan area to wrap jiaozi is actually a dry sole, which is made by drying the sole.
3. Squid is a kind of flounder, belonging to teleost and PARALICHTHYS. Squid's body is flat and asymmetrical, and both eyes are on the left; In front of the mouth, the mandible protrudes; The edge of the anterior branchial lid is free; Skin with eyes is dark gray or patchy, and skin without eyes is white. Carp is mainly used for fresh food or canned and pickled products, and cod liver oil can be extracted from fish liver. Japanese flounder is a rare fish in the Yellow Sea and Bohai Sea of China. Like other flounder varieties, it is a famous dish with seasonal flavor, and the cooked dish is bright, spicy and tender. There are many kinds of catfish, which are widely distributed in tropical or temperate oceans and are also produced in coastal areas of China.