Mackerel, blue-spotted mackerel, long and narrow, with blue-black head and back. Generally, it is 25 ~ 50 cm long and weighs 300 ~ 1000 g. It is distributed in the western North Pacific Ocean and originated in the Yellow Sea and Bohai Sea in China.

The first record of Xiao Du Shu Zhai by Hong in Qing Dynasty: "Jiaxing Ma Gao fish tastes better than other fish, but its naming significance has not been solved. Today, according to the cloud "Water Mirror, Zhu Mianshui", "There is valley water on the right side of Ma Gaocheng" ... then the fish should be named after the ground.

Long and narrow figure, blue and black head and back. There are a series of blue-black circular spots on the upper side, the abdomen is white, and there are horns behind the dorsal fin and gluteal fin. In summer and autumn, they often migrate long distances in groups.

Mackerel has less thorns and more meat, and its body is rich in fat. It's delicious and unusual to burn it with "snow vegetables" It can be made into "smoked fish" or pickled, which is a delicious dish.