Can honey gouramis live with killifish?

Verdict
Yes

Yes, honey gouramis and killifish can live together. Both are fine at 72–77°F. Plan on at least 10 gal.

Honey gouramiHoney gourami72–82°F · pH 6–7.5 KillifishKillifish70–77°F · pH 5.5–7

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Honey gourami 72–82°Killifish 70–77°
The green band is the temperature range both can live in.
456789Both: 6–7Honey gourami 6–7.5Killifish 5.5–7
The green band is the pH both tolerate.

Size to scale

Honey gourami · 2 inKillifish · 2.5 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 gouramiKillifish
Temperature72–82 °F70–77 °F
pH6–7.55.5–7
Adult size2.0 in2.5 in
Minimum tank10 gal10 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupAlone or in pairsAlone or in pairs
DietOmnivoreCarnivore

Better tank mates for honey gouramis

All honey gourami tank mates

Better tank mates for killifish

All killifish tank mates

Questions

Can honey gouramis live with killifish?

Yes, honey gouramis and killifish can live together. Both are fine at 72–77°F. Plan on at least 10 gal.

What temperature suits both honey gouramis and killifish?

72–77 °F. Honey gouramis need 72–82 °F, killifish need 70–77 °F.

What size tank do honey gouramis and killifish need together?

At least 10 gal, set by the honey gourami. Add space for each extra fish.