Saury cannot be cultured artificially.
Due to the high requirements on the breeding environment and the high technical difficulty, artificial breeding is difficult, and it has not yet entered real large-scale mass production. Swordfish and hairtail are different in terms of family, color, appearance, living environment, taste, and price. Among them, the swordfish belongs to the order Herringiformes, the family Anchovy, and the genus Anchovy; the hairtail belongs to the order Scombridiformes, the family Hairtail, and the genus Hairtail.
Although both saury and hairtail have long and narrow body shapes, the overall shape of saury is slightly smaller than hairtail. There are more individuals of hairtail over 1 meter, with sharp teeth, ferocious mouths, and large protruding eyeballs.
Habits of saury
The Yangtze saury is one of the typical migratory fish species. During the reproductive season, they enter the freshwater area from the estuary area and go upstream along the main stream to the production grounds in the middle reaches of the Yangtze River for reproductive migration. After spawning, the broodstock disperse in fresh water to feed, and then slowly return to the estuary and offshore waters to continue fattening. Young Yangtze swordfish also migrate along the river to the estuary area to be fattened.
They usually live in the sea, and are also found in some freshwater lakes in the middle and lower reaches of the Yangtze River. From February to March every year, broodstock enter the river from the sea and go up the river for reproductive migration. After entering the reproductive season in March and April every spring, the spawning groups enter lakes, tributaries along the Yangtze River, or carry out spawning activities on the main stream of the Yangtze River. The juveniles of long-jawed bream also migrate along the river to the estuary area to be fattened, and then return to the sea to live in the second year. In winter, swordfish do not migrate long distances, but gather in deep offshore areas to overwinter.