Can hatchetfish live with dwarf gouramis?

Verdict
Yes

Yes. Hatchetfish and dwarf gouramis get along in the same tank. Both are fine at 75–81°F. Plan on at least 20 gal.

HatchetfishHatchetfish75–81°F · pH 5.5–7.5 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: 75–81°Hatchetfish 75–81°Dwarf gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6–7.5Hatchetfish 5.5–7.5Dwarf gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Hatchetfish · 1.5 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

HatchetfishDwarf gourami
Temperature75–81 °F72–82 °F
pH5.5–7.56–7.5
Adult size1.5 in3.0 in
Minimum tank20 gal10 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupGroups of 6+Alone or in pairs
DietCarnivoreOmnivore

Better tank mates for hatchetfish

All hatchetfish tank mates

Better tank mates for dwarf gouramis

All dwarf gourami tank mates

Questions

Can hatchetfish live with dwarf gouramis?

Yes. Hatchetfish and dwarf gouramis get along in the same tank. Both are fine at 75–81°F. Plan on at least 20 gal.

What temperature suits both hatchetfish and dwarf gouramis?

75–81 °F. Hatchetfish need 75–81 °F, dwarf gouramis need 72–82 °F.

What size tank do hatchetfish and dwarf gouramis need together?

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