1. Water quality management: Koi are not strict in their requirements for water temperature and water quality and are suitable for living in a slightly alkaline and low-hardness water environment. However, as the saying goes, "Raise water first before raising fish." So don't underestimate water quality. You should know that most of the diseases of koi are caused by poor water quality.
2. Water temperature management: The water temperature range for koi to live in is 2-30°C. The most suitable water temperature for living is 20-25°C. In water of this temperature, koi swim actively, have a strong appetite, are robust in constitution, and are brightly colored.
3. Feeding density: When raising koi, pay attention to density. Generally, in an aquarium of 60×30×15 centimeters, six koi with a body length of 15-20 centimeters can be raised. Eight koi can be stocked in a 90×30×50 aquarium, and ten koi can be stocked in an 110×30×50 centimeter aquarium.
4. Bait feeding: Koi are similar to goldfish in feeding. They can be fed twice a day. In different seasons of the year, the amount of bait is increased or decreased depending on the temperature. Generally, baits such as fish worms, pellet feed, and small earthworms can be fed. But don't feed too much. Generally, being 80% full is enough.
5. Prevention of fish diseases: Common fish diseases of koi include saprolegniasis, gill rot disease, enteritis, and scale protrusion disease. Pay attention to putting in corresponding drugs to improve the situation. Although koi fish diseases are inevitable, it is still recommended to do a good job in preventing koi fish diseases.