1, not needed. In fact, hairtail has no scales. Moreover, the "fish scale" of hairtail is rich in 6- thioguanine, which has a good anti-cancer effect, so it is not necessary to scrape the scales when eating hairtail.

2. This scale on the surface of hairtail is actually a layer of epidermis formed by special fat, which is called "silver grease". This is a high-quality fat with high nutritional value. Studies have shown that it is rich in protein, iron, iodine and other nutrients, more lecithin and a variety of unsaturated fatty acids, as well as a natural anticancer component: 6- thioguanine. "Silver grease" can increase skin elasticity, make skin delicate and smooth, make hair black and delay brain aging; It also has a good protective effect on cardiovascular system and can prevent hypertension. It can be seen that the silver scales with hairtail are a treasure. In Zhejiang, Shandong and other places, hairtail is never scraped.