The congestion on the fish is generally due to the poor water quality. If you want to treat it, you need to pay attention to changing the water. You must use the water that has been trapped. At the same time, you also need to control the temperature to avoid too large temperature difference between day and night. Then salt should be added to the water, the concentration should be controlled at about three thousandths, and if the situation is serious, yellow powder should be used for treatment, during which oxygen explosion should be fasted until the fish recover.
1. Poor water quality: Poor water quality is very dangerous for fish, because it may cause various diseases, and at the same time there will be some stress reactions, and body surface congestion is one of them. In view of this situation, it is necessary to change water in time to keep the water clean and sanitary, so that the fish will recover.
2. Lack of light: Fish also need a certain amount of light during their growth. If the environment is too dark, it will also cause congestion on its body surface. Proper illumination can play a bactericidal effect and inhibit the number of harmful bacteria, but do not illuminate too long, otherwise it is easy to cause algae outbreak in water.
3. New water stimulation: If you change too much water for the fish, or use water from a different source, it will stimulate the fish. Usually change water to use tap water, before changing water need to dry water for several days to remove chlorine, but also to control the amount of water, generally about a quarter is appropriate.
