Hairtail had better be marinated first and then fried. Add a few slices of ginger and a little soy sauce so that hairtail will have a taste. Marinate it for about 20 minutes and you can fry it. If you want hairtail to fry without sticking to the pan, that's a trick. Add some salt when adding vegetable oil to the pot, so that the fried hairtail will not stick to the pot.
This method can be used to fry any fish in the future, so that the skin of the fish will not stick to the pot.