Can jack dempseys live with firemouth cichlids?

Verdict
No

No. Jack dempseys and firemouth cichlids should not share a tank. Jack dempseys are aggressive and much bigger than firemouth cichlids.

Jack DempseyJack Dempsey72–86°F · pH 6.5–7.5 Firemouth cichlidFiremouth cichlid75–86°F · pH 6.5–8

What to watch

What works

Water side by side

55°60°65°70°75°80°85°90°Both: 75–86°Jack Dempsey 72–86°Firemouth cichlid 75–86°
The green band is the temperature range both can live in.
456789Both: 6.5–7.5Jack Dempsey 6.5–7.5Firemouth cichlid 6.5–8
The green band is the pH both tolerate.

Size to scale

Jack Dempsey · 10 inFiremouth cichlid · 6 in0"2"4"6"8"10"
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

Jack DempseyFiremouth cichlid
Temperature72–86 °F75–86 °F
pH6.5–7.56.5–8
Adult size10.0 in6.0 in
Minimum tank55 gal30 gal
TemperamentAggressiveSemi-aggressive
Swims atMiddleBottom
GroupAlone or in pairsAlone or in pairs
DietCarnivoreOmnivore

Better tank mates for jack dempseys

All jack dempsey tank mates

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Questions

Can jack dempseys live with firemouth cichlids?

No. Jack dempseys and firemouth cichlids should not share a tank. Jack dempseys are aggressive and much bigger than firemouth cichlids.

What temperature suits both jack dempseys and firemouth cichlids?

75–86 °F. Jack dempseys need 72–86 °F, firemouth cichlids need 75–86 °F.

What size tank do jack dempseys and firemouth cichlids need together?

At least 55 gal, set by the jack dempsey. Add space for each extra fish.