What fish can live with Firemouth Cichlid?

Pair with congo tetras, large rainbowfish, peaceful larger cichlids (severum), bristlenose. Avoid small tetras and fin-nippers.

What tank mates should you avoid with Firemouth Cichlid?

Avoid Neon Tetra, Guppy, Chili Rasbora, Betta based on size, temperament, or predation risk on file.

What size tank do Firemouth Cichlid need for a community?

200 L minimum for one. 300 L for a pair with companions.

Firemouth Cichlid tank mates

Calmer than most Central American cichlids. Bluffs hard with the red throat but rarely follows through unless spawning.

Evidence: partially verified

Confidence: high

Lists below are built from this species record (safest, best with, risky, unsafe) — each link opens a pair-level check, not a guarantee.

← Full Firemouth Cichlid profile·Compatibility checker·Tank builder·More cichlid

Best tank mates (on file)

Merged from conservative safest and best with fields — de-duplicated by species.

Electric Blue Acara Pair check
The Firemouth Cichlid profile lists Electric Blue Acara as both safe and a recommended pairing. Electric Blue Acara is a semi-aggressive intermediate-care species with a 150L minimum. Run the pair checker for your specific tank before stocking.
Molly Pair check
The Firemouth Cichlid profile lists Molly as both safe and a recommended pairing. Molly is a peaceful beginner-care species with a 80L minimum. Run the pair checker for your specific tank before stocking.
Sailfin Molly Pair check
The Firemouth Cichlid profile lists Sailfin Molly as both safe and a recommended pairing. Sailfin Molly is a peaceful beginner-care species with a 120L minimum. Run the pair checker for your specific tank before stocking.
Swordtail Pair check
The Firemouth Cichlid profile lists Swordtail as both safe and a recommended pairing. Swordtail is a semi-aggressive beginner-care species with a 80L minimum. Run the pair checker for your specific tank before stocking.

Risky or situational

From risky tank mates and broad avoid with (excluding “unsafe” below). May work with species-only setups, more water, or mature systems — read the pair page.

None on file beyond the safe list.

Fish to avoid with Firemouth Cichlid

From the unsafe list — predation, aggression, or space rules on this profile.

Neon Tetra See why (pair)
Firemouth Cichlid is flagged as predatory or as likely to eat small fish, and Neon Tetra at 4cm is well within an adult Firemouth Cichlid's gape.
Guppy See why (pair)
Firemouth Cichlid is flagged as predatory or as likely to eat small fish, and Guppy at 5cm is well within an adult Firemouth Cichlid's gape.
Chili Rasbora See why (pair)
Firemouth Cichlid is flagged as predatory or as likely to eat small fish, and Chili Rasbora at 2cm is well within an adult Firemouth Cichlid's gape.
Betta See why (pair)
Betta conflicts with Firemouth Cichlid on temperament, predation, or footprint. The juvenile size in a shop tank is not the figure that matters here.

Tank size and groups

Published minimum for Firemouth Cichlid: 200L — group minimum 6 .
Compatibility changes when the tank is too short for turning, too little for a real school, or too warm for one species and not the other — that is why pair checks include tank context, not only temperament.
Nearest litre hub to this minimum: 200L hub.

Easier alternatives to consider

Conservative beginner-peaceful picks from the library — not replacements for reading, but a shorter on-ramp than this species for a first tank.

Plan before you buy

Pair checks for every mix, then multi-species stocking in the builder.

Open compatibility checker Tank builder

Filtration & heating

A 200L minimum tank for Firemouth Cichlid needs a filter rated for at least 800L/hr turnover and a heater maintaining 22–30°C.

Filter buying guide →Heater buying guide →Beginner plants guide →