Koi fish is best fed in the morning. As a wide-temperature fish, Koi's appetite will also be affected by temperature. When the temperature rises in the morning, the fish's appetite will rise. Feeding is the best at this time, and the fish will eat up quickly and have enough time to digest. Usually, koi fish should be fed two or three times a day, and each feeding should be finished in about 5 minutes. The unfinished feed should be cleaned in time to avoid polluting the water body.

1. Feed selection: Koi is not picky eaters, and they can eat more kinds of food. Common animal feeds include bumper shrimp, red worm, water earthworm, bread worm, yellow mealworm, etc. These foods have high nutritional value and are very suitable for feeding koi which is in the golden period of growth and development. But in addition to animal feed, some synthetic feed can also be fed to help balance nutrition.

2. Feeding amount: Koi has a large appetite, but breeders can't feed too much food. It is best to control the amount of feeding at 8 minutes each time. If it is a small koi fish, it is most appropriate to eat the food in 5 minutes. If it is a big koi fish, it is most appropriate to eat the food in 30 minutes. However, breeders should adjust the feeding amount according to the change of temperature at ordinary times, and increase it appropriately when the temperature is high.

3. Feeding frequency: When feeding koi, it must be fixed at a fixed time, so as to cultivate their conditioned reflex. Generally speaking, koi can be fed twice a day. Feeding them at 9:00 a.m. and 3:00 p.m. every day can ensure that they have enough food.