The back of common mackerel is gray-black, the abdomen is white, the color of the back and abdomen is obvious, and the meat is white; Blue-spotted mackerel has a blue-green luster near its back, with obvious blue spots on its back and pink meat.

Blue spotted mackerel is generally 26 ~ 80 cm long, and the largest can reach 1 m or more.

Mackerel is an animal of the genus Mackerel, which is listed in the Red List of Endangered Species of the World Conservation Union. Distributed in the western North Pacific, China is made in the East China Sea, Yellow Sea and Bohai Sea. Mackerel is shorter than its head, with a long kiss and a big mouth. The upper and lower jaws have a row of strong teeth with flat triangular sides and sparse arrangement. Palatal bones and hoes also have teeth, but there are no teeth on the tongue. The body is thin and round, the lateral scales are large and obvious, and most of the ventral sides are bare and scaleless.