Can pearl gouramis live with firemouth cichlids?

Verdict
Yes

Yes. Pearl gouramis and firemouth cichlids make a good pair. Both are fine at 77–82°F. Plan on at least 30 gal.

Pearl gouramiPearl gourami77–82°F · pH 6–7.5 Firemouth cichlidFiremouth cichlid75–86°F · pH 6.5–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 77–82°Pearl gourami 77–82°Firemouth cichlid 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Pearl gourami 6–7.5Firemouth cichlid 6.5–8
The green band is the pH both tolerate.

Size to scale

Pearl gourami · 5 inFiremouth cichlid · 6 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 gouramiFiremouth cichlid
Temperature77–82 °F75–86 °F
pH6–7.56.5–8
Adult size5.0 in6.0 in
Minimum tank30 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atTopBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for pearl gouramis

All pearl gourami tank mates

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Questions

Can pearl gouramis live with firemouth cichlids?

Yes. Pearl gouramis and firemouth cichlids make a good pair. Both are fine at 77–82°F. Plan on at least 30 gal.

What temperature suits both pearl gouramis and firemouth cichlids?

77–82 °F. Pearl gouramis need 77–82 °F, firemouth cichlids need 75–86 °F.

What size tank do pearl gouramis and firemouth cichlids need together?

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