Can kuhli loaches live with pearl gouramis?

Verdict
Yes

Yes. Kuhli loaches and pearl gouramis get along in the same tank. Both are fine at 77–82°F. Plan on at least 30 gal.

Kuhli loachKuhli loach75–86°F · pH 5.5–7 Pearl gouramiPearl gourami77–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–82°Kuhli loach 75–86°Pearl gourami 77–82°
The green band is the temperature range both can live in.
456789Both: 6–7Kuhli loach 5.5–7Pearl gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Kuhli loach · 3.5 inPearl gourami · 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

Kuhli loachPearl gourami
Temperature75–86 °F77–82 °F
pH5.5–76–7.5
Adult size3.5 in5.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for kuhli loaches

All kuhli loach tank mates

Better tank mates for pearl gouramis

All pearl gourami tank mates

Questions

Can kuhli loaches live with pearl gouramis?

Yes. Kuhli loaches and pearl gouramis get along in the same tank. Both are fine at 77–82°F. Plan on at least 30 gal.

What temperature suits both kuhli loaches and pearl gouramis?

77–82 °F. Kuhli loaches need 75–86 °F, pearl gouramis need 77–82 °F.

What size tank do kuhli loaches and pearl gouramis need together?

At least 30 gal, set by the pearl gourami. Add space for each extra fish.