Cleaning fish: 1. Thoroughly clean gills and wash them with clear water. 2. Scrape the black clothes in the fish belly and the blood tendons under the spine thoroughly. 3. Finally, check whether the fish scales have been completely removed and rinse them with clean water.

Vinegar descaling: 1. First soak the fish in cold water 1.5~2 hours. 2. Add 2-4 tablespoons vinegar and soak for 20-30 minutes. 3. Finally, you can remove all the scales with a brush.

Deodorization: 1. Wash fish with clean water to remove dirt. 2. Then put it in warm tea 10~ 15 minutes and take it out. 3. Finally, wash with clear water to remove fishy smell.

Boning: 1. After scraping the scales, draw a knife on the back of the fish with the tip of the knife to the depth of the fish bone; Cut a knife on each side of the fish head, and the blade should still touch the fish bone; The fish tail should be completely removed. 2. Then cook the fish. After the fish is cooked, gently pull the fish bone out of the fish tail and take it out of the fish.

Fish (scientific name: Piscium) is a general term for aquatic vertebrates with variable temperature. It is covered with bone scales, breathes through gills, swims through the swinging of tail and trunk and the coordinated movements of fins, and feeds on the upper and lower jaws. It belongs to the vertebrate subfamily of Chordata and is the oldest vertebrate. Fish is rich in animal protein and phosphorus, which plays an important role in the development of human physical strength and intelligence.