Can firemouth cichlids live with blue gouramis?

Verdict
Yes

Yes. Firemouth cichlids and blue gouramis get along in the same tank. Both are fine at 75–82°F. Plan on at least 30 gal.

Firemouth cichlidFiremouth cichlid75–86°F · pH 6.5–8 Blue gouramiBlue gourami72–82°F · pH 6–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Firemouth cichlid 75–86°Blue gourami 72–82°
The green band is the temperature range both can live in.
456789Both: 6.5–8Firemouth cichlid 6.5–8Blue gourami 6–8
The green band is the pH both tolerate.

Size to scale

Firemouth cichlid · 6 inBlue 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

Firemouth cichlidBlue gourami
Temperature75–86 °F72–82 °F
pH6.5–86–8
Adult size6.0 in5.0 in
Minimum tank30 gal30 gal
TemperamentSemi-aggressiveSemi-aggressive
Swims atBottomTop
GroupAlone or in pairsAlone or in pairs
DietOmnivoreOmnivore

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Better tank mates for blue gouramis

All blue gourami tank mates

Questions

Can firemouth cichlids live with blue gouramis?

Yes. Firemouth cichlids and blue gouramis get along in the same tank. Both are fine at 75–82°F. Plan on at least 30 gal.

What temperature suits both firemouth cichlids and blue gouramis?

75–82 °F. Firemouth cichlids need 75–86 °F, blue gouramis need 72–82 °F.

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

At least 30 gal, set by the firemouth cichlid. Add space for each extra fish.