Can hillstream loaches live with dwarf gouramis?

Verdict
Yes

Yes. Hillstream loaches and dwarf 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 Dwarf gouramiDwarf 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°Dwarf gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Hillstream loach 6.5–7.5Dwarf gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Hillstream loach · 2.5 inDwarf gourami · 3 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 loachDwarf gourami
Temperature68–75 °F72–82 °F
pH6.5–7.56–7.5
Adult size2.5 in3.0 in
Minimum tank20 gal10 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 dwarf gouramis

All dwarf gourami tank mates

Questions

Can hillstream loaches live with dwarf gouramis?

Yes. Hillstream loaches and dwarf 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 dwarf gouramis?

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

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

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