Can guppies live with pearl gouramis?

Verdict
Yes

Yes. Guppies and pearl gouramis get along in the same tank. Both are fine at 77–82°F. Plan on at least 30 gal.

GuppyGuppy72–82°F · pH 6.8–7.8 Pearl gouramiPearl gourami77–82°F · pH 6–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–82°Guppy 72–82°Pearl gourami 77–82°
The green band is the temperature range both can live in.
456789Both: 6.8–7.5Guppy 6.8–7.8Pearl gourami 6–7.5
The green band is the pH both tolerate.

Size to scale

Guppy · 2 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

GuppyPearl gourami
Temperature72–82 °F77–82 °F
pH6.8–7.86–7.5
Adult size2.0 in5.0 in
Minimum tank10 gal30 gal
TemperamentPeacefulPeaceful
Swims atTopTop
GroupGroups of 3+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for guppies

All guppy tank mates

Better tank mates for pearl gouramis

All pearl gourami tank mates

Questions

Can guppies live with pearl gouramis?

Yes. Guppies and pearl gouramis get along in the same tank. Both are fine at 77–82°F. Plan on at least 30 gal.

What temperature suits both guppies and pearl gouramis?

77–82 °F. Guppies need 72–82 °F, pearl gouramis need 77–82 °F.

What size tank do guppies and pearl gouramis need together?

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