It is difficult for us to buy live hairtail in the market, because hairtail usually lives in the offshore area of 20 to 100 meters, and is usually caught by sea. After hairtail is caught ashore, the internal organs of the body will swell and burst due to the sudden decrease of external pressure, and the blood vessels will rupture, and the eyes will be prominent. There is a saying that "the water will die". (You can refer to divers who go ashore in deep water. When divers go ashore in deep water, they will suffer from Decompressionsickness, commonly known as diver's disease or caisson disease (DCS), which generally refers to diseases caused by the rapid decrease of ambient pressure. This is a kind of diving hazard and baropathy. )

The caught hairtail is easy to die because the pressure changes quickly, but if it is caught by fishing, it usually swims to the surface of the water layer by itself, and it has its own process of slowly decompressing, so it can catch live hairtail by fishing.

The hairtail caught is generally silvery, and the silver "scale" outside will be completely protected, and the hairtail caught rarely breaks its belly and looks good.