Can pearl gouramis live with killifish?

Verdict
Yes, with care

Yes, with care. Pearl gouramis and killifish can share a tank, but watch one thing. They only share 77°F. Keep the heater set there and steady.

Pearl gouramiPearl gourami77–82°F · pH 6–7.5 KillifishKillifish70–77°F · pH 5.5–7

What to watch

What works

Water side by side

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

Size to scale

Pearl gourami · 5 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

Pearl gouramiKillifish
Temperature77–82 °F70–77 °F
pH6–7.55.5–7
Adult size5.0 in2.5 in
Minimum tank30 gal10 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupAlone or in pairsAlone or in pairs
DietOmnivoreCarnivore

Better tank mates for pearl gouramis

All pearl gourami tank mates

Better tank mates for killifish

All killifish tank mates

Questions

Can pearl gouramis live with killifish?

Yes, with care. Pearl gouramis and killifish can share a tank, but watch one thing. They only share 77°F. Keep the heater set there and steady.

What temperature suits both pearl gouramis and killifish?

77–77 °F. Pearl gouramis need 77–82 °F, killifish need 70–77 °F.

What size tank do pearl gouramis and killifish need together?

At least 30 gal, set by the pearl gourami. Add space for each extra fish.