Can crayfish live with pearl gouramis?

Verdict
Yes, with care

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

CrayfishCrayfish65–77°F · pH 6.5–8 Pearl gouramiPearl gourami77–82°F · pH 6–7.5

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 77°Crayfish 65–77°Pearl gourami 77–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Crayfish 6.5–8Pearl gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Crayfish · 5 inPearl gourami · 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

CrayfishPearl gourami
Temperature65–77 °F77–82 °F
pH6.5–86–7.5
Adult size5.0 in5.0 in
Minimum tank20 gal30 gal
TemperamentAggressivePeaceful
Swims atBottomTop
GroupOne per tankAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for crayfish

All crayfish tank mates

Better tank mates for pearl gouramis

All pearl gourami tank mates

Questions

Can crayfish live with pearl gouramis?

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

What temperature suits both crayfish and pearl gouramis?

77–77 °F. Crayfish need 65–77 °F, pearl gouramis need 77–82 °F.

What size tank do crayfish and pearl gouramis need together?

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