Age and Health of the Fish
Younger fish are more susceptible to starvation than older fish. This is because they have a higher metabolism and need to eat more food to maintain their energy levels. Older fish also have more experience and are better able to find food.
Size of the Pond
The size of the pond also plays a role in how long koi fish can survive without food. Fish in larger ponds have more space to roam and find food. They are also less likely to be stressed, which can lead to loss of appetite.
Temperature of the Water
The temperature of the water is another important factor. Koi fish are cold-blooded animals, and their metabolism slows down when the water temperature is low. This means that they need to eat less food in cold weather.
As a general rule, koi fish should be fed once or twice a day. The amount of food you give them should be based on the size of the fish and the water temperature. If you are not sure how much food to give them, you can ask your local pet store for advice.
It is important to remember that koi fish can go without food for a limited amount of time. If you are going to be away for a long period of time, you should arrange for someone to feed your fish.