Can rainbow sharks live with firemouth cichlids?

Verdict

Yes, with care

Yes, with care. Rainbow sharks and firemouth cichlids can share a tank, but watch one thing. Both claim territory on the bottom. Give each its own cave and plenty of floor space.

Rainbow shark72–80°F · pH 6.5–7.5

Firemouth cichlid75–86°F · pH 6.5–8

What to watch

Watch outBoth claim territory on the bottom. Give each its own cave and plenty of floor space.
Watch outRainbow sharks chase other bottom fish out of their patch.

What works

Both are fine at 75–80°F.
pH 6.5–7.5 suits both.

Water side by side

The green band is the temperature range both can live in.

The green band is the pH both tolerate.

Size to scale

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

	Rainbow shark	Firemouth cichlid
Temperature	72–80 °F	75–86 °F
pH	6.5–7.5	6.5–8
Adult size	6.0 in	6.0 in
Minimum tank	55 gal	30 gal
Temperament	Semi-aggressive	Semi-aggressive
Swims at	Bottom	Bottom
Group	One per tank	Alone or in pairs
Diet	Omnivore	Omnivore

Better tank mates for rainbow sharks

All rainbow shark tank mates

Better tank mates for firemouth cichlids

All firemouth cichlid tank mates

Questions

Can rainbow sharks live with firemouth cichlids?

Yes, with care. Rainbow sharks and firemouth cichlids can share a tank, but watch one thing. Both claim territory on the bottom. Give each its own cave and plenty of floor space.

What temperature suits both rainbow sharks and firemouth cichlids?

75–80 °F. Rainbow sharks need 72–80 °F, firemouth cichlids need 75–86 °F.

What size tank do rainbow sharks and firemouth cichlids need together?

At least 55 gal, set by the rainbow shark. Add space for each extra fish.