Can koi live with elephant nose fish?

Verdict
Yes

Yes, koi and elephant nose fish can live together. Both are fine at 73–77°F. Plan on at least Pond.

KoiKoi59–77°F · pH 7–8.5 Elephant nose fishElephant nose fish73–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–77°Koi 59–77°Elephant nose fish 73–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Koi 7–8.5Elephant nose fish 6–7.5
The green band is the pH both tolerate.

Size to scale

Koi · 24 inElephant nose fish · 9 in0"6"12"18"24"
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

KoiElephant nose fish
Temperature59–77 °F73–82 °F
pH7–8.56–7.5
Adult size24.0 in9.0 in
Minimum tankPond55 gal
TemperamentPeacefulSemi-aggressive
Swims atAll levelsBottom
GroupGroups of 3+Alone or in pairs
DietOmnivoreCarnivore

Better tank mates for koi

All koi tank mates

Better tank mates for elephant nose fish

All elephant nose fish tank mates

Questions

Can koi live with elephant nose fish?

Yes, koi and elephant nose fish can live together. Both are fine at 73–77°F. Plan on at least Pond.

What temperature suits both koi and elephant nose fish?

73–77 °F. Koi need 59–77 °F, elephant nose fish need 73–82 °F.

What size tank do koi and elephant nose fish need together?

A pond. Koi outgrow indoor tanks.