Can koi live with electric blue acaras?

Verdict

Yes, with care

Yes, with care. Koi and electric blue acaras can share a tank, but watch one thing. A grown koi may treat small electric blue acaras as food, especially at night.

Koi59–77°F · pH 7–8.5

Electric blue acara72–82°F · pH 6.5–7.5

What to watch

Watch outA grown koi may treat small electric blue acaras as food, especially at night.

What works

Both are fine at 72–77°F.
pH 7–7.5 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

	Koi	Electric blue acara
Temperature	59–77 °F	72–82 °F
pH	7–8.5	6.5–7.5
Adult size	24.0 in	6.0 in
Minimum tank	Pond	30 gal
Temperament	Peaceful	Semi-aggressive
Swims at	All levels	Middle
Group	Groups of 3+	Alone or in pairs
Diet	Omnivore	Omnivore

Better tank mates for koi

All koi tank mates

Better tank mates for electric blue acaras

All electric blue acara tank mates

Questions

Can koi live with electric blue acaras?

Yes, with care. Koi and electric blue acaras can share a tank, but watch one thing. A grown koi may treat small electric blue acaras as food, especially at night.

What temperature suits both koi and electric blue acaras?

72–77 °F. Koi need 59–77 °F, electric blue acaras need 72–82 °F.

What size tank do koi and electric blue acaras need together?

A pond. Koi outgrow indoor tanks.