Can crayfish live with kissing gouramis?

Verdict
Yes

Yes, crayfish and kissing gouramis can live together. Both are fine at 72–77°F. Plan on at least 55 gal.

CrayfishCrayfish65–77°F · pH 6.5–8 Kissing gouramiKissing gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 72–77°Crayfish 65–77°Kissing gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–8Crayfish 6.5–8Kissing gourami 6–8
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inKissing gourami · 10 in0"2"4"6"8"10"
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

CrayfishKissing gourami
Temperature65–77 °F72–82 °F
pH6.5–86–8
Adult size5.0 in10.0 in
Minimum tank20 gal55 gal
TemperamentAggressiveSemi-aggressive
Swims atBottomMiddle
GroupOne per tankAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for kissing gouramis

All kissing gourami tank mates

Questions

Can crayfish live with kissing gouramis?

Yes, crayfish and kissing gouramis can live together. Both are fine at 72–77°F. Plan on at least 55 gal.

What temperature suits both crayfish and kissing gouramis?

72–77 °F. Crayfish need 65–77 °F, kissing gouramis need 72–82 °F.

What size tank do crayfish and kissing gouramis need together?

At least 55 gal, set by the kissing gourami. Add space for each extra fish.