2. Evenly spread cooking wine, pepper and appropriate amount of salt on the fish body and abdominal cavity, add shredded onion and ginger slices, and marinate for 20 minutes. Dice carrots and cut garlic into 5mm pieces.
3. Add water to the starch to make starch paste, rub it on the fish by hand, and put the cut place into hot oil in the pot. When it is 70% hot, grab the fish tail with one hand, and pour the oil on the cutting knife with the other hand until the fish is turned out and shaped.
4. Put the fish in the pot and fry it until it is cooked (try not to turn it over to prevent the fish from breaking. You can pour hot oil on the fish with a spoon. If you want to put the finished product belly down, put it belly down in the oil pan).
5. Raise the oil temperature, fry the fish in the pot again, fry the skin in the pot, leave a little oil in the pot, stir-fry the diced vegetables, stir-fry the tomato sauce in the pot, pour in a proper amount of boiling water, and add sugar, vinegar and salt.
6. After the sweet and sour juice is boiled, add appropriate amount of water starch and burn until it is sticky. You can add some cooked oil to make the soup bright, and pour the sweet and sour juice evenly on the fish.
Nearly 500 million years ago, the life course on the earth took a great leap, and the earliest fish-shaped animals appeared, which opened the prelude to the history of vertebrates, thus leading to the development of the animal kingdom and entering a new historical stage. Real fish first appeared more than 300 million years ago. In the whole long historical process, a large number of fish have survived, and with the passage of time, they have already become extinct. Fish that live on the earth are only a tiny part of the species that later appeared and evolved.
Humans can identify species and name them long ago. Generally speaking, "fish" includes all animals in the water, so many animals living in the water are named fish. Whales, seals, giant salamanders, squid, octopus, starfish, jellyfish, sponges and amphioxus are all confused with fish.