Can koi live with dwarf gouramis?

Verdict

Yes, with care

Yes, with care. Koi and dwarf gouramis can share a tank, but watch one thing. At 24 inches a koi can swallow a small dwarf gourami. Fast, alert fish usually stay out of reach.

Koi59–77°F · pH 7–8.5

Dwarf gourami72–82°F · pH 6–7.5

What to watch

Watch outAt 24 inches a koi can swallow a small dwarf gourami. Fast, alert fish usually stay out of reach.

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	Dwarf gourami
Temperature	59–77 °F	72–82 °F
pH	7–8.5	6–7.5
Adult size	24.0 in	3.0 in
Minimum tank	Pond	10 gal
Temperament	Peaceful	Peaceful
Swims at	All levels	Top
Group	Groups of 3+	Alone or in pairs
Diet	Omnivore	Omnivore

Better tank mates for koi

All koi tank mates

Better tank mates for dwarf gouramis

All dwarf gourami tank mates

Questions

Can koi live with dwarf gouramis?

Yes, with care. Koi and dwarf gouramis can share a tank, but watch one thing. At 24 inches a koi can swallow a small dwarf gourami. Fast, alert fish usually stay out of reach.

What temperature suits both koi and dwarf gouramis?

72–77 °F. Koi need 59–77 °F, dwarf gouramis need 72–82 °F.

What size tank do koi and dwarf gouramis need together?

A pond. Koi outgrow indoor tanks.