This kind of fish is a deep-sea fish, and its main fishing value lies in that its roe is a very high-quality raw material for roe sauce. After taking the fish seeds, the fish body is useless and can only be used as fish meal mixed with feed. Later, China people developed the domestic market, so they all sold to China.
To tell the truth, if the sand on the fish skin is properly treated, the fish will taste good in braised or stewed. The only question is whether this kind of fish is kept in accordance with food preservation standards. This is hard to say. You'd better pay attention to the freshness of fish yourself.