1. Change water: If you want to raise koi carp, you should pay attention to water quality first. No matter what kind of fish you raise, the quality of water is particularly critical. In order to keep the water clean and sanitary, you should change the water regularly. It is usually changed every five to seven days, and if there is filtration equipment, it can also be changed every two weeks.

2. Feeding: It is necessary to do a good job of feeding koi fish. Improper feeding will cause fish to get sick or die directly. Because this kind of fish has a miscellaneous diet and can eat more things, the choice of feed is also very wide, usually it can be fed two or three times a day, and it is best to finish it within 5 minutes after each feeding.

3. Oxygenation: Koi is relatively large and has a high demand for oxygen, so we must pay attention to oxygenation. It is best to prepare an oxygen pump to oxygenate the fish tank 24 hours a day, so as to avoid hypoxia. Oxygenation in stages is fine, as long as the fish don't float their heads, there is basically no problem.

Koi is an ornamental fish that is easy to raise. It is relatively large, so it needs a large fish tank and ensures the breathing of fish, so it should be equipped with an oxygen pump. In addition, it has strong adaptability to temperature and water quality, and its feeding habits are miscellaneous, so it is relatively easy to raise.