hairtail out of the water will die. It lives in the waters below 30 meters, and even below 60-100 meters in winter. It can adapt to strong water pressure, but can not adapt to low-pressure environment, because there is no ability to adjust the pressure difference, so the high pressure in the body after water will break the stomach, leading to death.
The hairtail actually has scales, but the scales are relatively small and not easy to find. It is generally believed that its scales have degenerated into silver film, and there is also a view that the silver film on the body surface is a fat-forming epidermis, not scales. In addition, although it is considered a scaleless fish, scaleless fish includes fish without scales and fish with very small scales, which actually belongs to the latter, so it still has scales.
The hairtail is a relatively ferocious fish. It preys on more than 60 kinds of marine animals, among which there are more fish and crustaceans, and there are seasonal differences. For example, they usually feed on Apogon lineatus and krill in spring, krill, mysis and pomfret in summer, stomatopod larvae and seven-star bottom lamp fish in autumn, and small hairtail in winter besides seven-star bottom lamp fish. In addition, they will cannibalize.
The hairtail's swimming ability is relatively poor. It generally floats in the middle of the sea during the day and falls to the bottom of the sea at night. When at rest, its head will be upward, its body will be vertical, waving its dorsal and pectoral fins, watching the situation above, and when it finds prey, it will take the initiative to pounce. In addition, in spring, it will swim in groups to the coastal areas, and will swim from south to north to spawn.
