Koi ponds are an excellent addition to any home. In a well-designed, well-maintained pond, koi fish is a sight. But what if you want to add some turtles to the mix?

You’re undoubtedly curious about turtles and koi fish coexisting and whether it’s even conceivable. So, we’ve compiled all the information you’ll need to create a habitat that your koi fish and your new turtle will appreciate.

Is it possible to keep turtles in a koi pond?

In a nutshell, turtles can be successfully raised in koi ponds. However, there are a few important points to consider.

A few factors influence whether turtles view your koi as food and attack them. These factors include the turtle’s size, the koi fish’s breed, and how well the turtles are fed.

Do turtles eat koi fish?

To preserve turtles and koi fish in the same pond, you must solve an age-old problem. It’s about turtles devouring koi fish. So yes, keeping both types carries the danger of losing your favorite and most valuable koi.

Turtle size and breed

Turtle swimming

A small 4-inch turtle cannot eat or injure a 24-inch koi fish. However, if you put a small yearling koi in a pond alongside giant adult turtles, the turtles may mistake the koi for food. The good news is that koi is known for growing to be quite big. As a result, it’s best to keep young, small turtles separate from large, older koi.

Keep the turtles well fed.

A turtle’s and koi’s diets have a lot in common. So keeping them fed shouldn’t be too difficult, but it’s still something to keep in mind.

What kind of turtle should I get for my koi pond?

Finding a native turtle in your region is your best bet for a healthy and happy turtle. On the other hand, freshwater turtles can be kept in a pond alongside koi. Freshwater turtles may do well 1 in ponds since they need the same water requirements as koi. Avoid breeds that prefer to hunt and eat fish for your koi’s safety.

Freshwater turtles that may coexist with koi in a pond include:

Spotted turtles with koi

These turtles are classified as little turtles since they can only grow to be 5 inches long. So placing them in a pond with koi will be a fantastic match.

Aquatic insects, tadpoles, aquatic vegetation, slugs, crustaceans, larvae, and small fishes are the prey of spotted turtles.

Unlike other water turtles, Spotted turtles like roaming and preying on land insects.

River cooter turtle with koi

This relatively common species may grow large (up to 12 inches). They are a basking breed that enjoys catching the sun on the tops of rocks and logs. The adults eat predominantly herbivorous foods. If you maintain it well-fed, you won’t have to worry about your mature river cooter turtle harassing your koi.

Eastern box turtle with koi

These turtles are medium in size, measuring between 4.5 to 6 inches. Their large spherical shell with yellow-orange splotches immediately distinguishes them. They enjoy wetlands and will usually congregate along the edge of your pond. Fruits, worms, mushrooms, and bugs may be found in their diet.

Yellow-bellied turtle with koi

Yellow-bellied turtles have had different degrees of success when kept with koi by hobbyists. However, since we’re talking about a pond, there’s a good possibility they’ll stay together.

A yellow-bellied turtle may grow 11 inches long, making it a serious hazard once it reaches maturity.

What other fish may coexist in a pond with koi?

Sunbathing Turtles on a log surrounded by koi fish

Goldfish and common carp are the most popular fish to keep in a pond. They look wonderful, need little upkeep, and can survive with a wide range of different animals and plants. You may maintain koi, but make sure they have adequate space.

Here are some of the fish that can live with koi on a pond:


Carp fish are among the most popular pond fish to keep. They look wonderful and grow to be quite big. They can grow to be 15 inches long or more (40 cm).

Cory catfish

These fish are not eaten by koi and make an excellent addition to your reptile water bath. They are small and do not grow very large (about 6 inches long). Thus they take up less room than other types of fish. By eating algae, they also help to keep the water clear.

Common goldfish

These are some of the easiest fish to raise in a pond, making them ideal for novices. They can coexist with other fish. However, some have been known to eat each other.

Trout (Rainbow)

Depending on their size, they may be kept in a pond with koi. It’s not a major concern if you keep smaller fish. However, if the rainbow trout grows too large (about 7 inches long), they may represent a threat to the koi in your pond.


These are freshwater fish that don’t get very big (6 to 8 inches long), making them ideal for small ponds. They’re also easy to care for, making them a great option if you’re worried about keeping other species in your pond.


Finally, can turtles and Koi coexist in the same pond?

Yes, turtles may be kept in ponds with koi fish if you are certain there will be no complications. They do, however, require a lot more space than other pond fish species, so it’s important to figure out what type of turtle you want before deciding on the size of your pond.

We also said that turtles aren’t the only creatures that may be kept with koi. If you have a big backyard garden pond, you may add other varieties of fish.

So make sure you’ve studied the good creatures before adding them to your pond, and if you maintain things clean, there shouldn’t be any difficulties when Koi are kept in the same pond as turtles.