How Long Can Koi Fish Go Without Eating?

How long can koi fish go without eating? Koi fish is a really special type of fish and although it does have a large appetite it can easily go two weeks without eating during summer. Koi fish tend to get their nutrients from bugs, algae, or anything it can get from the bottom of the pond during and hibernates during winter.

There are lots of interesting things about koi fish and one notable one is its feeding habit. Koi fish can go 2 years without you having to feed them but they can leave off their energy stored. Hence, why they are regarded as special fish and they can feed on anything too. Naturally, they feed on anything they can get from the bottom of the pond.

Keep in mind that the temperature also determines koi feeding habits. These fish can hunt along the pond floor and surface to feed. It is hard not to like this omnivore’s fish. It happens to be one of the most common fish in outdoor garden ponds.

Although koi fish are related to goldfish, however, they do not have the same level of care. Koi fish will gladly feed on goldfish food but it is important to know how long your koi fish can go without eating so they don’t starve.

How Long Can Koi Fish Go Without Eating?

Koi fish hibernates in winter which means they spend the whole winter without food. Koi fish can go for 2 weeks or more without food in the pond, they store enough nutrients during summer. This is why a well-balanced pond ecosystem is vital for koi fish so you can worry less about feeding them.

Koi fish does have a large appetite and will feed on anything but during winter, they live on the previously-stored nutrient.

Koi fish in the pond

While there is no doubt koi fish can go two weeks without food, for them to last longer than that depends on the temperature of where you live in. They can go without eating during the colder parts of winter which is 40 degrees and below.

Their metabolism is a lot higher during winter and they can’t go many days without eating. Summer is the time koi fish conserves their energy and can eat 4 times a day.

However, if their water gets above 90 degrees during summer, they can stop eating. Koi is quite an interesting fish and doesn’t need constant feeding, if it’s hungry, they will find what they can in their environment which includes bugs, smaller fish, or algae.

Can koi fish starve to death?

Koi fish can live over a month or more without eating as long as the pond is healthy. They are unlikely to starve to death, however in an unhealthy pond and if they do reduce to eat, they can starve to death. Koi fish are a type of carp that likes to be fed every day except in winter where they go without eating. To sustain fish, keep the pond healthy with enough algae to feed on.

Will koi fish eat other fish when hungry?

Koi are not predatory fishes but will feed on smaller fishes if there is nothing to eat. Koi are opportunistic eaters so yes, they will eat anything suitable including little fish and plants. When the pond is overstocked, koi fish will eat anything including their kids.

Do koi fish know when to stop eating?

Koi loves eating especially in summer but they can stop eating all through summer. If koi fish should suddenly stop eating in summer, this might be a concerning sign but often nothing to worry about. Koi fish will change their eating habit needs the right temperature to keep eating, they do not have a fixed eating habit and will change their feeding pattern based on the environment.

Why do koi fish die suddenly?

Koi fish don’t die suddenly from starvation oxygen depletion in the pond can lead to suffocation which is the common cause of sudden death. Poor water quality can also cause the death of koi carp fish. Hence, regular testing and maintenance are very important.

Wrapping Up

Koi fish does have an unusual feeding strategy but they won’t die from starvation and the quality of your pond is more important.

You don’t need to feed koi fish all winter since their metabolism will be down during this period. Provide them with premium nutrition during autumn and summer so they have enough energy to survive all through the winter cold.