Can honey gouramis live with rummy nose tetras?

Verdict
Yes

Yes. Honey gouramis and rummy nose tetras get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

Honey gouramiHoney gourami72–82°F · pH 6–7.5 Rummy nose tetraRummy nose tetra75–84°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Honey gourami 72–82°Rummy nose tetra 75–84°
The green band is the temperature range both can live in.
456789Both: 6–7Honey gourami 6–7.5Rummy nose tetra 5.5–7
The green band is the pH both tolerate.

Size to scale

Honey gourami · 2 inRummy nose tetra · 2 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

Honey gouramiRummy nose tetra
Temperature72–82 °F75–84 °F
pH6–7.55.5–7
Adult size2.0 in2.0 in
Minimum tank10 gal20 gal
TemperamentPeacefulPeaceful
Swims atTopMiddle
GroupAlone or in pairsGroups of 6+
DietOmnivoreOmnivore

Better tank mates for honey gouramis

All honey gourami tank mates

Better tank mates for rummy nose tetras

All rummy nose tetra tank mates

Questions

Can honey gouramis live with rummy nose tetras?

Yes. Honey gouramis and rummy nose tetras get along in the same tank. Both are fine at 75–82°F. Plan on at least 20 gal.

What temperature suits both honey gouramis and rummy nose tetras?

75–82 °F. Honey gouramis need 72–82 °F, rummy nose tetras need 75–84 °F.

What size tank do honey gouramis and rummy nose tetras need together?

At least 20 gal, set by the rummy nose tetra. Add space for each extra fish.