Can firemouth cichlids live with clown plecos?

Verdict
Yes

Yes. Firemouth cichlids and clown plecos make a good pair. Both are fine at 75–82°F. Plan on at least 30 gal.

Firemouth cichlidFiremouth cichlid75–86°F · pH 6.5–8 Clown plecoClown pleco73–82°F · pH 6.5–7.5

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–82°Firemouth cichlid 75–86°Clown pleco 73–82°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Firemouth cichlid 6.5–8Clown pleco 6.5–7.5
The green band is the pH both tolerate.

Size to scale

Firemouth cichlid · 6 inClown pleco · 3.5 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 cichlidClown pleco
Temperature75–86 °F73–82 °F
pH6.5–86.5–7.5
Adult size6.0 in3.5 in
Minimum tank30 gal20 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomBottom
GroupAlone or in pairsAlone or in pairs
DietOmnivoreHerbivore

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Better tank mates for clown plecos

All clown pleco tank mates

Questions

Can firemouth cichlids live with clown plecos?

Yes. Firemouth cichlids and clown plecos make a good pair. Both are fine at 75–82°F. Plan on at least 30 gal.

What temperature suits both firemouth cichlids and clown plecos?

75–82 °F. Firemouth cichlids need 75–86 °F, clown plecos need 73–82 °F.

What size tank do firemouth cichlids and clown plecos need together?

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