1, groundwater pumping cannot directly raise fish. It must be aired for about 24 hours before it can be used. Because a large amount of groundwater comes from the underground surface and contains a lot of calcium, magnesium, sodium and other substances, it must be dried first. Because the oxygen content of groundwater is not high, it is necessary to explode oxygen for several days in the process of drying water, so as not to change water too much and lead to hypoxia of fish.

2. Be sure to raise water before raising fish. Ordinary tap water cannot be directly used by fish. Water must be disinfected and dechlorinated first. Disinfection can use related drugs or special disinfection salts, and chlorine can be removed by exposure or standing. Nitrifying bacteria must be added to the water, and a nitrifying bacteria system should be established to treat the excrement of fish in the water. When raising fish, we should also ensure that the food is sufficient, pay attention to proper feeding, and eat it within 5- 10 minutes each time.

3. Be sure to feed the fish more fresh forage, because it is rich in nutrition and less in cellulose, which will make the fish easier to digest, make the fish grow faster and have less chance of getting sick. However, due to the limited fresh forage and large fish appetite, we can choose to feed artificially planted ryegrass and Sudan grass. Be careful not to feed the fish with netted forage, observe the feeding situation of the fish in time and feed more forage.