Which Fish Can Live With Koi?

Koi are a type of fish that are often kept in ponds and aquariums. They are known for their bright colors and patterns, and they can range in size from a few inches to several feet.

Koi are generally peaceful fish, but they can be territorial and aggressive towards other fish that are the same size or smaller. So, which fish can live with koi?

Can koi be kept with other fish?

Koi can be kept with other fish, but they may not get along well. Koi are usually aggressive and territorial.

It is important to choose a compatible tank size for the number of fish you are planning to keep.

What fish Cannot live with koi?

There are many different types of fish that cannot live with koi, including:
-Largemouth Bass
-Smallmouth Bass
-Moorish Manatee

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Many of these fish are not compatible with koi because they require a different environment than the koi fish. Koi are typically kept in ponds or lakes, while many of these fish need to live in flowing water.

Koi are also a much larger fish than many of the other fish that cannot live with koi, so they can easily eat them.

Can koi fish and goldfish live together?

Koi fish and goldfish are both tropical fish and can live together in a tank provided the water temperatures are appropriate. Koi fish are a bit more aggressive and will likely eat any smaller goldfish, while goldfish are more timid and will likely avoid any larger koi.

It is also important to keep the tank clean and clear of vegetation and other fish so the koi and goldfish can see each other clearly.

Can betta fish live with koi?

There is some speculation that betta fish and koi can coexist peacefully, but there is no scientific evidence to support this. Koi are a predatory fish and may view betta fish as a food source.

If the betta fish is not large enough or aggressive enough, it may be harassed or killed by the koi. Additionally, koi ponds can become contaminated with pollutants, which can adversely affect the betta fish.

Therefore, it is best to keep betta fish and koi fish in separate ponds.

Can I put goldfish in my koi pond?

Yes, goldfish can be added to a koi pond. However, before adding goldfish, it is important to consult with an experienced aquarist.

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Goldfish are aggressive fish and may compete with koi for food and habitat. If the pond is not large enough for both species, it may be best to keep the goldfish and add koi later.

Can koi and arowana live together?

Koi and arowana can live together in a healthy and harmonious environment provided they are kept in separate tanks. Koi will generally eat smaller fish, while arowana may eat koi.

It is important to monitor both fish regularly and remove any dead or diseased fish to prevent conflict.

Will koi eat baby goldfish?

Koi are predatory fish and as such are not suited to eating baby goldfish. Koi are typically fed a diet of fish, so if a baby goldfish were to be fed to a Koi it could potentially cause harm to the fish.

Additionally, Koi are territorial and may attack a baby goldfish if it is brought into the fish’s home.

Can tetras live with koi?

There is some debate on whether or not tetras can live with koi. Many people believe that they cannot, as the two fish have very different social structures and diets.

Others maintain that they can, provided that the tetras are kept in separate ponds and that the koi are not overfed. It is important to keep in mind that any fish can potentially aggress another if they are not properly introduced and socialized.

If you are considering adding a tetra to your koi pond, it is best to consult with a professional aquarist who can give you specific advice.

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Can you put koi with cichlids?

There is some debate over whether or not koi can be successfully kept with cichlids. The main concern is that the koi may compete for food and space with the cichlids.

Furthermore, the water conditions in which the koi are kept may not be ideal for the cichlids.

Will Big koi eat little koi?

It largely depends on the individual big koi’s diet and preferences. Some big koi may choose to eat smaller koi, while others may not have an interest in such fare.

Additionally, some big koi may be more aggressive than others and may view small koi as a potential food source.

How fast do koi grow?

Koi carp grow at a rate of approximately one inch per month.

Will koi bully goldfish?

There is some debate as to whether koi or goldfish are more aggressive when it comes to competing for food and territory. However, in general, it is generally accepted that koi are more aggressive than goldfish.

This is likely due to the fact that koi are more territorial and aggressive than goldfish when it comes to feeding. Goldfish, on the other hand, are typically more passive when it comes to feeding and are more likely to feed in groups.


There are a few different types of fish that can live with koi, including goldfish, barbs, and danios. All of these fish are relatively peaceful and can coexist peacefully with koi.