Can zebra danios live with firemouth cichlids?

Verdict
Yes

Yes. Zebra danios and firemouth cichlids get along in the same tank. Both are fine at 75–77°F. Plan on at least 30 gal.

Zebra danioZebra danio65–77°F · pH 6.5–8 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: 75–77°Zebra danio 65–77°Firemouth cichlid 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–8Zebra danio 6.5–8Firemouth cichlid 6.5–8
The green band is the pH both tolerate.

Size to scale

Zebra danio · 2 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

Zebra danioFiremouth cichlid
Temperature65–77 °F75–86 °F
pH6.5–86.5–8
Adult size2.0 in6.0 in
Minimum tank10 gal30 gal
TemperamentPeacefulSemi-aggressive
Swims atTopBottom
GroupGroups of 6+Alone or in pairs
DietOmnivoreOmnivore

Better tank mates for zebra danios

All zebra danio tank mates

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Questions

Can zebra danios live with firemouth cichlids?

Yes. Zebra danios and firemouth cichlids get along in the same tank. Both are fine at 75–77°F. Plan on at least 30 gal.

What temperature suits both zebra danios and firemouth cichlids?

75–77 °F. Zebra danios need 65–77 °F, firemouth cichlids need 75–86 °F.

What size tank do zebra danios and firemouth cichlids need together?

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