Can hillstream loaches live with sparkling gouramis?

Verdict
Yes

Yes. Hillstream loaches and sparkling gouramis make a good pair. Both are fine at 72–75°F. Plan on at least 20 gal.

Hillstream loachHillstream loach68–75°F · pH 6.5–7.5 Sparkling gouramiSparkling gourami72–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–75°Hillstream loach 68–75°Sparkling gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Hillstream loach 6.5–7.5Sparkling gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Hillstream loach · 2.5 inSparkling gourami · 1.5 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 loachSparkling gourami
Temperature68–75 °F72–82 °F
pH6.5–7.56–7.5
Adult size2.5 in1.5 in
Minimum tank20 gal5 gal
TemperamentPeacefulPeaceful
Swims atBottomTop
GroupGroups of 3+Groups of 4+
DietHerbivoreOmnivore

Better tank mates for hillstream loaches

All hillstream loach tank mates

Better tank mates for sparkling gouramis

All sparkling gourami tank mates

Questions

Can hillstream loaches live with sparkling gouramis?

Yes. Hillstream loaches and sparkling gouramis make a good pair. Both are fine at 72–75°F. Plan on at least 20 gal.

What temperature suits both hillstream loaches and sparkling gouramis?

72–75 °F. Hillstream loaches need 68–75 °F, sparkling gouramis need 72–82 °F.

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

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