1. Animal feed: It is best for goldfish to feed more high-nutrition foods in their infancy, which can not only speed up their growth, but also ensure their physique is stronger. The animal feed suitable for goldfish is abundant shrimp, red worm, blood worm, fish worm, water flea, water earthworm and so on.

2. Plant feed: Breeders can match some plant feed at ordinary times, because plant feed contains more vitamins and trace elements, which can improve their resistance and immunity. There are also many plant feeds suitable for goldfish, such as vegetables, fruits, moss, aquatic plants and so on.

3. Synthetic feed: After goldfish reach adulthood, breeders can also feed them some synthetic feed. This can ensure their balanced nutrition and avoid malnutrition.

The feeding frequency of goldfish needs to be determined according to their growth stage. Under normal circumstances, it is best for juvenile goldfish to feed 2-3 times a day, and the amount of each feeding should be finished within 5 minutes. When they are adults, they can be fed once a day instead, and the amount of each feeding can be eaten within 10 minutes.

They are omnivorous fish, and breeders need to choose a variety of foods to feed together. This can not only ensure their adequate nutrition, but also avoid malnutrition.