Can firemouth cichlids live with dojo loaches?

Verdict
Yes

Yes. Firemouth cichlids and dojo loaches get along in the same tank. Both are fine at 75–77°F. Plan on at least 55 gal.

Firemouth cichlidFiremouth cichlid75–86°F · pH 6.5–8 Dojo loachDojo loach59–77°F · pH 6.5–8

Why it works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–77°Firemouth cichlid 75–86°Dojo loach 59–77°
The green band is the temperature range both can live in.
456789Both: 6.5–8Firemouth cichlid 6.5–8Dojo loach 6.5–8
The green band is the pH both tolerate.

Size to scale

Firemouth cichlid · 6 inDojo loach · 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

Firemouth cichlidDojo loach
Temperature75–86 °F59–77 °F
pH6.5–86.5–8
Adult size6.0 in6.0 in
Minimum tank30 gal55 gal
TemperamentSemi-aggressivePeaceful
Swims atBottomBottom
GroupAlone or in pairsGroups of 3+
DietOmnivoreOmnivore

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Better tank mates for dojo loaches

All dojo loach tank mates

Questions

Can firemouth cichlids live with dojo loaches?

Yes. Firemouth cichlids and dojo loaches get along in the same tank. Both are fine at 75–77°F. Plan on at least 55 gal.

What temperature suits both firemouth cichlids and dojo loaches?

75–77 °F. Firemouth cichlids need 75–86 °F, dojo loaches need 59–77 °F.

What size tank do firemouth cichlids and dojo loaches need together?

At least 55 gal, set by the dojo loach. Add space for each extra fish.