Koi has strong adaptability and eats miscellaneous food. There are many kinds of feed on the market, most of which are mixed and processed by animal feed and plant feed. Although these feeds are not as nutritious as natural foods, they are generally comprehensive in nutrition and can be used to feed koi fish.

Fish feed is mainly divided into floating feed and sinking feed. The best way to feed koi is to choose floating feed. If you choose sinking feed, it will not only lead to the waste of feed, but also easily lead to the pollution of water quality, which will lead to the illness of koi and affect the health of koi.

Koi eat actively. Although they digest slowly in adulthood, they basically eat as much food as they feed. However, there are several situations that lead koi to eat little or even no food.

When they feel changes in the external environment, they will not eat at this time because they will feel unsafe. When they are sick, they don't eat actively. At this time, they basically have a bad appetite. When the water quality changes, they don't eat it. Koi is very sensitive to the water quality and the pH value of water. If the water quality doesn't like it or the pH value is wrong, it will lead to their inactive or even non-eating.