Japanese Mackerel

Japanese Mackerel

Japanese mackerel is a warm-water pelagic fish. Annual long distance migration, swimming strong, fast speed. In spring and summer, they live in the middle and upper layers, and move above the warm layer. In the reproductive season, they often form large groups and move to the water surface. The optimum temperature for fishing was 8 ~ 24℃, and the highest temperature was 14 ~ 16℃. They have phototaxis and vertical movement habits day and night. In morning, dusk or misty drizzle weather, they often float in groups, and the ripples generated form different shapes on the sea surface. Fishermen often aim to release nets according to this characteristic.

The Japanese mackerel distributed in the east and yellow Seas can be divided into two populations: the western part of the East China Sea and the western part of the Five Islands. The western part of the East China Sea overwinters in the waters near the isobathic line 100 meters to the north of Diaoyu Island. Every spring and summer, the Japanese mackerel migrates to the offshore waters of the northern part of the East China Sea and the offshore waters of the Yellow Sea and spawns.