Can honey gouramis live with black neon tetras?

Verdict
Yes

Yes. Honey gouramis and black neon tetras get along in the same tank. Both are fine at 73–81°F. Plan on at least 15 gal.

Honey gouramiHoney gourami72–82°F · pH 6–7.5 Black neon tetraBlack neon tetra73–81°F · pH 5.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 73–81°Honey gourami 72–82°Black neon tetra 73–81°
The green band is the temperature range both can live in.
456789Both: 6–7.5Honey gourami 6–7.5Black neon tetra 5.5–7.5
The green band is the pH both tolerate.

Size to scale

Honey gourami · 2 inBlack neon tetra · 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

Honey gouramiBlack neon tetra
Temperature72–82 °F73–81 °F
pH6–7.55.5–7.5
Adult size2.0 in1.5 in
Minimum tank10 gal15 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 black neon tetras

All black neon tetra tank mates

Questions

Can honey gouramis live with black neon tetras?

Yes. Honey gouramis and black neon tetras get along in the same tank. Both are fine at 73–81°F. Plan on at least 15 gal.

What temperature suits both honey gouramis and black neon tetras?

73–81 °F. Honey gouramis need 72–82 °F, black neon tetras need 73–81 °F.

What size tank do honey gouramis and black neon tetras need together?

At least 15 gal, set by the black neon tetra. Add space for each extra fish.