Firemouth Cichlid
Thorichthys meeki
The Firemouth Cichlid (Thorichthys meeki) is an aggressive fish that's easy to keep. Give it a tank of at least 200 litres (53 US gallons), water held at 73-82°F, and a pH of 6.5-8.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Central America
- Central America & Mexico
Regional colours match the stocking calculator's origin map.
Firemouth Cichlid Tank Setup
Give them at least 200 litres (53 US gallons). Cichlids are territorial and produce plenty of waste, so strong filtration and some rocks or wood to break up sight lines both help. Aim for 73-82°F and a pH around 6.5-8. They reach about 15 cm as adults, so don't be misled by the small juveniles sold in stores.
What Do Firemouth Cichlids Eat?
They're not fussy eaters - feed a varied diet, rotating good-quality dry, frozen, and gel foods rather than the same thing every day, and match the food size to their mouths.
Firemouth Cichlid Tank Mates
May nip fins; territorial during breeding. Pairs bond strongly. Avoid with small fish. The Firemouth Cichlid is aggressive, which is the first thing to weigh up when you choose tank mates. It's a known fin-nipper, so avoid bettas, guppies, and other slow, long-finned fish. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Firemouth Cichlids Good for Beginners?
Reasonable early choice after cycling. Buy after the tank has stable ammonia and nitrite readings, not the same weekend you fill it.
Firemouth Cichlid - frequently asked questions
What size tank do Firemouth Cichlids need?
Firemouth Cichlids need a tank of at least 200 litres (53 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Firemouth Cichlids need?
Keep them at 73-82°F with a pH of 6.5-8, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Firemouth Cichlids eat?
Firemouth Cichlids are omnivores and aren't fussy eaters. Feed a varied mix of good-quality dry, frozen, and gel foods, and match the food size to their mouths. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Firemouth Cichlids good for beginners?
Yes - Firemouth Cichlids are a reasonable beginner fish once the tank is cycled and parameters are stable. Add them after ammonia and nitrite read 0 ppm, not the same day you fill the tank.
Common mistakes with Firemouth Cichlids
- Underestimating tank size - the minimum footprint is 200 litres (53 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
- Mixing with long-finned fish - Firemouth Cichlids will nip at bettas, angelfish, and other fish with flowing fins, causing stress and infection risk.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Fish to avoid mixing with Firemouth Cichlids
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates
- Neon TetraSize risk - Firemouth Cichlids will likely eat Neon Tetra at adult size
