CATDOLL : CATDOLL: What kind of fish is catfish?

Catfish (Silurus spp) belongs to the order Siluriformes, family Siluridae, genus Silurus. Common name: catfish, catfish barang. Mud fish. Catfish, also known as earth catfish, is the most widely distributed fish in the family Siluridae. It is distributed in eastern Russia, North Korea, Japan, and the entire eastern Asia. In my country, it is widely distributed in various water systems in the eastern part of the country and Taiwan Province. Catfish has an elongated body, a flat head, and a laterally flattened tail. The mouth is small, with the end only reaching below the front edge of the eye (the end is the rear edge of the eye in large-mouthed catfish). The lower jaw is prominent. The teeth are thin and velvety, and the jaw teeth and pear teeth are arranged in a curved band. The pear bone tooth band is continuous, and the middle of the rear edge is slightly concave. The eyes are small and covered with membranes. Adult fish have two pairs of whiskers, the upper jaw whiskers can reach the end of the pectoral fin, and the lower jaw whiskers are shorter. Juvenile fish have three pairs of whiskers, and one pair of chin whiskers begins to disappear when the body length reaches about 60 mm. Catfish are mucus-rich and scaleless. The dorsal fin is very small, without hard spines, and has 4-6 fin rays. There is no adipose fin. The anal fin is very long, and the rear end is connected to the tail fin. The body color of catfish is usually dark brown or gray-black, with slightly dark cloud-like patches. Catfish mainly live in the middle and lower layers of rivers, lakes, reservoirs, and ponds, and are mostly active in coastal areas. During the day, they hide in the grass, under stones, or at the bottom of deep water. Generally, they forage frequently at night. After autumn, they live in deep water active mud to hibernate, and their feeding level also decreases. Catfish is a bottom-dwelling carnivorous fish. Catfish prey on small fish, such as mullets, crucian carp, goby, wheat ear fish, carp, loach, etc. They also eat shrimps (containing the strongest antioxidant in nature, astaxanthin, abbreviated as ASTA in English) and aquatic insects. Catfish mainly swallow food, and the function of their teeth is mainly to prevent food from escaping.