Can bettas live with kuhli loaches?

Verdict
Yes

Yes. Bettas and kuhli loaches make a good pair. Both are fine at 76–82°F. Plan on at least 20 gal.

BettaBetta76–82°F · pH 6.5–7.5 Kuhli loachKuhli loach75–86°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 76–82°Betta 76–82°Kuhli loach 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7Betta 6.5–7.5Kuhli loach 5.5–7
The green band is the pH both tolerate.

Size to scale

Betta · 2.5 inKuhli loach · 3.5 in0"1"2"3"4"5"6"
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

BettaKuhli loach
Temperature76–82 °F75–86 °F
pH6.5–7.55.5–7
Adult size2.5 in3.5 in
Minimum tank5 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atTopBottom
GroupOne per tankGroups of 6+
DietCarnivoreOmnivore

Better tank mates for bettas

All betta tank mates

Better tank mates for kuhli loaches

All kuhli loach tank mates

Questions

Can bettas live with kuhli loaches?

Yes. Bettas and kuhli loaches make a good pair. Both are fine at 76–82°F. Plan on at least 20 gal.

What temperature suits both bettas and kuhli loaches?

76–82 °F. Bettas need 76–82 °F, kuhli loaches need 75–86 °F.

What size tank do bettas and kuhli loaches need together?

At least 20 gal, set by the kuhli loach. Add space for each extra fish.