1. For gold fish just bought, don't rush to feed artificial feed. At the beginning, some fresh water fleas were fed. After a week, the goldfish got used to the new environment and their physique recovered before starting to feed a small amount of artificial feed. The feed should be made of flakes as much as possible. This type of feed has strong water absorption and is not easy to expand again in the intestines of goldfish, causing constipation. Pellets can be smashed with a hammer before feeding. Powdered feed is not recommended due to its easy oxidation and deterioration. When feeding, at least, observe the feces of the fish frequently. If there is no feces or white feces appear, the feeding should be suspended for a few days.

2. The goldfish's feed should preferably be alternately fed with live bait and artificial feed, and interspersed with green feed. In a sunny rearing place, goldfish can nibble on the moss clinging to the tank walls. In the aquarium, plant-based feed patches can be placed on the tank wall for the goldfish to eat at will. It is best to buy artificial feeds specially developed for goldfish to prevent imbalances in the nutritional content.

3. Before changing the water in the aquarium, pet Xiaobian introduced that the new water should be placed near the aquarium, and the water temperature should be measured with a thermometer, and after confirming that the water temperature is consistent , and then change the water. Pay attention to the maintenance of water quality on weekdays (see the author's previous article), so that goldfish have a comfortable living space, and only when they are strong can they resist the invasion of viruses and germs.

4. For beginners of goldfish raising, when choosing a goldfish variety, it is best to start with general varieties first, and choose grass goldfish, dragon eye and other species to raise. These breeds can be adapted to rougher feeding practices. Precious breeds do not choose individuals that are too stubby. 对于已发病的金鱼，需要单独隔离饲养，或者用漂浮在水面的小网箱。 The water level should not be too high, as long as it can cover the fish. If the water temperature is below 20 degrees, and the isolation tank is not too small, there is no need to use oxygenation facilities to reduce the energy consumption of passive swimming for goldfish. And add one thousandth of coarse salt to the water to inhibit the growth of bacteria in the water. And slowly raise the water temperature to above 15 degrees. In the early stage of the disease can be changed to feed some green fodder, such as small duckweed and so on.

The goldfish may not like to eat it at first, but after 2-3 days of stopping other feeds, the goldfish will get used to it. Goldfish usually return to normal in about a week. For goldfish that are unbalanced due to gastrointestinal obstruction, you can refer to the treatment method for enteritis. For severely ill fish, if they are lying on the side of the water, a small syringe can be inserted into the swim bladder from the side of the body to extract part of the gas. Relieve symptoms. (This procedure requires intimate familiarity with the anatomy of different goldfish species and is risky.)