TankmateChecker

Can axolotls live with koi?

Verdict

No

No. Axolotls and koi should not share a tank. Fish nibble at axolotl gills, and axolotls swallow small fish. Keep axolotls on their own.

Axolotl

Axolotl60–66°F · pH 6.5–8

Koi

Koi59–77°F · pH 7–8.5

What to watch

Deal breakerFish nibble at axolotl gills, and axolotls swallow small fish. Keep axolotls on their own.

What works

Both are fine at 60–66°F.
pH 7–8 suits both.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

Adult length in an aquarium. A fish can swallow anything that fits in its mouth, roughly a third to half its own length for predators.

Care at a glance

	Axolotl	Koi
Temperature	60–66 °F	59–77 °F
pH	6.5–8	7–8.5
Adult size	10.0 in	24.0 in
Minimum tank	20 gal	Pond
Temperament	Peaceful	Peaceful
Swims at	Bottom	All levels
Group	Alone or in pairs	Groups of 3+
Diet	Carnivore	Omnivore

Better tank mates for koi

All koi tank mates

Questions

Can axolotls live with koi?

No. Axolotls and koi should not share a tank. Fish nibble at axolotl gills, and axolotls swallow small fish. Keep axolotls on their own.

What temperature suits both axolotls and koi?

60–66 °F. Axolotls need 60–66 °F, koi need 59–77 °F.

What size tank do axolotls and koi need together?

A pond. Koi outgrow indoor tanks.