Hairtail belongs to trichiuridae, an order of Perciformes, a bony fish in the subphylum of Vertebrates under Chordata. Also known as saury, nepotism, fat belt, oil belt, toothfish, etc., it is fierce. Qingdao and Rizhao cities along the Yellow Sea are called snakeheads.
Hairtail is flat as a ribbon, silvery gray, with light gray dorsal fin and pectoral fin, with tiny spots, black tail, big mouth of hairtail, and gradually tapering to the tail, and its height is twice as long as the head, and its total length is about 1 m..
It is fierce and mainly feeds on shrimps and squid. It is mainly distributed in the western Pacific Ocean and Indian Ocean, and distributed in the Yellow Sea, East China Sea, Bohai Sea and South China Sea in China. It is also known as the four major seafood in China with large yellow croaker, small yellow croaker and squid.
Extended data
Geographical distribution of hairtail: It is widely distributed, mainly in the western Pacific Ocean and Indian Ocean, and can be seen in all coastal provinces of China. Hairtail along the coast of China can be divided into two categories: south and north.
The northern hairtail is larger than the southern hairtail. It overwinters in the southern Yellow Sea and swims to the Bohai Sea in spring, forming a spring fishing season. In autumn, it groups and returns to the wintering area to form an autumn fishing season. The southern hairtail moves north-south every year along the western edge of the East China Sea with different seasons. It migrates to the north in spring and to the south in winter. The hairtail in the East China Sea can be divided into spring and winter seasons.
Life habit of hairtail: Hairtail has poor swimming ability, floating in the middle of seawater during the day and descending to the bottom of the sea at night. At rest, the head is up and the body is vertical, only by waving the dorsal fin and pectoral fin, and the eyes are watching the movement on the head. If the prey is found, the dorsal fin vibrates rapidly, the body bends and pounces on the food.
Hairtail has the characteristics of queuing in groups. Every spring, when the water temperature rises, hairtail swims to the shore in groups, and from south to north, which is the fishing season. At the winter solstice, the water temperature drops, and hairtail swims deep into the water to avoid the cold.
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