fish is going to die, it is better to isolate it first. On the one hand, it is to prevent it from transmitting diseases to healthy fish. On the other hand, it is also convenient for treatment. After all, it is better to soak it in a separate tank instead of pouring drugs directly into the fish tank. After isolation, the water should be changed regularly to keep the water clean and hygienic, and a proper amount of furazolidone should be added to the water, so that the fish can recover slowly.

2. What are the causes

of fish belly swelling? 1. Overfeeding: Fish belly swelling is most likely caused by overfeeding. Many fish do not have a stomach, so they can eat as much as they are fed, which is what happens when they are fed too much. The best way to prevent this from happening is to control feeding and starve for a day or two if you feed too much.

2. Deterioration of water quality: If the water is not changed for a long time, the content of harmful substances in the water will increase, which will cause certain toxicity to the fish, and even make its stomach swell. Therefore, in the usual feeding process, it is necessary to change the water every other time, but do not change too frequently, so as not to stimulate the fish.

3. Bacterial infection: When bacteria infect the fish, it can also cause its belly to bulge. This condition is also called ascites. It is a very difficult disease to treat. It can only be prevented by maintaining the water quality at ordinary times. Once the disease occurs, you can basically give up and prepare to change the new fish.