The mackerel is a group of fish under the family Scombridae, genus Mackerel, with a fusiform body, slightly laterally compressed, dorsal and ventral margins are shallowly curved, the caudal peduncle is thin and short, the base of the caudal fin is flanked on each side by two small bulging ridges, the eyes are close to the dorsal margins of the head, and have a well-developed blubbery eyelid; the caudal fins are y forked, and the dorsal side of the body is bluish-black, with dark-blue and irregular markings, which extend to the top and bottom of the lateral line, but there are no spots below the lateral line; the abdomen is silvery white with a slight tinge of yellow. spots; the abdomen is silvery white with a slight tinge of yellow.

The mackerel is a near-coastal pelagic migratory fish. During the daytime, the mackerel inhabits near-lower waters; it waits until nighttime to swim upward to layers where it can prey on planktonic crustaceans, squid, and small fish. It has a wide distribution range, distributed in Japan, the Atlantic Mediterranean coast, the Korean Peninsula, the south coast of Africa, of course, China is also distributed, such as the East China Sea, the Yellow Sea and the South China Sea are distributed.