If fish pulling green excrement is strip-shaped and there is no abnormal performance, it means eating too many aquatic plants or algae, which can improve the diet. If there is the phenomenon of defecation, and it is relatively thin, it shows that you have enteritis. Enteritis is a common disease of fish, which is usually related to diet and water quality. Eating unclean things or deteriorating water quality will cause fish to get sick. Therefore, we should pay attention to checking and changing food and changing water regularly.

1. Stop eating and isolate: After the fish gets enteritis, it should be stopped first. The sick fish often have a bad appetite and don't eat it when fed. However, if these foods become residual bait, they will continue to pollute the water body, which is very unfavorable to the health of the fish. In order to prevent the disease from spreading or bullying, the sick fish should be isolated and raised in a separate fish tank.

2, the old three types: For enteritis, the old three types should be used for treatment first. The so-called old three things are changing water, heating up and adding salt. Changing water should be changed every other day, so as to maintain water quality as soon as possible. Heating up can promote metabolism, but it should not rise too high at one time, preferably 2 ℃ every day, and the concentration of salt should also be paid attention to, which is usually five thousandths.

3. Medicinal soaking: If the illness is serious and the old three can't achieve the therapeutic effect, it is necessary to take a medicated bath. The commonly used drug is furazolidone, and 4-6 tablets should be added for every 100 liters of water. After three days, if the feces are normal, you can stop taking the drug and change the water.