Can koi live with bala sharks?

Verdict
Yes

Yes. Koi and bala sharks make a good pair. Both are fine at 72–77°F. Plan on at least Pond.

KoiKoi59–77°F · pH 7–8.5 Bala sharkBala shark72–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Koi 59–77°Bala shark 72–82°
The green band is the temperature range both can live in.
456789Both: 7–7.5Koi 7–8.5Bala shark 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Koi · 24 inBala shark · 13 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

KoiBala shark
Temperature59–77 °F72–82 °F
pH7–8.56.5–7.5
Adult size24.0 in13.0 in
Minimum tankPond125 gal
TemperamentPeacefulPeaceful
Swims atAll levelsMiddle
GroupGroups of 3+Groups of 4+
DietOmnivoreOmnivore

Better tank mates for koi

All koi tank mates

Better tank mates for bala sharks

All bala shark tank mates

Questions

Can koi live with bala sharks?

Yes. Koi and bala sharks make a good pair. Both are fine at 72–77°F. Plan on at least Pond.

What temperature suits both koi and bala sharks?

72–77 °F. Koi need 59–77 °F, bala sharks need 72–82 °F.

What size tank do koi and bala sharks need together?

A pond. Koi outgrow indoor tanks.