How to Choose Hardy Koi? Detailed Guide to Feeding Precautions
Feeding: For koi kept in a home aquarium, it is best to use live foods such as fish worms and tubifex worms, while koi fry need to be fed on infusoria. However, the sources of live food are limited and sometimes they cannot be bought at all, so fish worms are generally used as a substitute; if there is a complete nutritional...

Feeding must be done at fixed times and in fixed amounts to keep the water clear. Generally speaking, the number of feedings should be 1 to 2 times a day, once in the morning and once in the evening.