Can hillstream loaches live with pearl gouramis?

Verdict
No

No. Hillstream loaches and pearl gouramis should not share a tank. No shared temperature. Hillstream loaches need 68–75°F, pearl gouramis need 77–82°F.

Hillstream loachHillstream loach68–75°F · pH 6.5–7.5 Pearl gouramiPearl gourami77–82°F · pH 6–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Hillstream loach 68–75°Pearl gourami 77–82°
The ranges do not meet, so one of them would always be too warm or too cold.
456789Both: 6.5–7.5Hillstream loach 6.5–7.5Pearl gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Hillstream loach · 2.5 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

Hillstream loachPearl gourami
Temperature68–75 °F77–82 °F
pH6.5–7.56–7.5
Adult size2.5 in5.0 in
Minimum tank20 gal30 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupGroups of 3+Alone or in pairs
DietHerbivoreOmnivore

Better tank mates for hillstream loaches

All hillstream loach tank mates

Better tank mates for pearl gouramis

All pearl gourami tank mates

Questions

Can hillstream loaches live with pearl gouramis?

No. Hillstream loaches and pearl gouramis should not share a tank. No shared temperature. Hillstream loaches need 68–75°F, pearl gouramis need 77–82°F.

What temperature suits both hillstream loaches and pearl gouramis?

None. Hillstream loaches need 68–75 °F and pearl gouramis need 77–82 °F, so the ranges do not meet.

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

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