Firemouth Cichlid

Firemouth Cichlid

Thorichthys meeki

Family: Cichlidae • Origin: Various

Firemouth Cichlid (Thorichthys meeki) is a semi-aggressive cichlid reaching 6 inches. Can be kept singly. Minimum tank size: 40 gallons.

Min Tank
40 gal
Max Size
6"
Temperature
75-82°F
pH
6.5-7.5
Lifespan
9 years
School Size
Solo OK
Swim Level
middle
Hardness
5-15 dGH
semi-aggressiveintermediateomnivore

Is Firemouth Cichlid Right for Your Tank?

Firemouth Cichlid is an excellent choice for beginners — rated "intermediate" difficulty (2/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. They need at least 40 gallons — a mid-size tank commitment. Plan your space accordingly.

Firemouth Cichlid is semi-aggressive — they can live with others but may bully smaller or slower fish. Choose tank mates carefully. They are territorial — provide adequate hiding spots and maintain enough space to reduce aggression. Expected lifespan: 9 years with proper care.

Common Mistakes with Firemouth Cichlid

Relying on a heater without a thermometer

Firemouth Cichlid needs 7582°F. Heaters malfunction or drift over time — always use a separate thermometer to verify. Temperature swings of even 3–4°F can trigger stress and disease, particularly ich.

Putting them in a tank under 40 gallons

Many beginners underestimate tank size needs. Firemouth Cichlid requires at least 40 gallons — ideally 60. Cramped tanks lead to stunted growth, aggression, and poor water quality.

Housing with peaceful nano fish

Firemouth Cichlid is semi-aggressive and territorial — small, peaceful species like neon tetras, endlers, or celestial pearl danios will be stressed, bullied, or eaten. Choose tank mates that can hold their own.

Care Tips

  • Max size: 6 inches
  • Temperature: 75-82°F
  • pH: 6.5-7.5
  • Can be kept alone or in pairs
  • semi-aggressive temperament — choose tankmates carefully

Feeding: Standard omnivore diet. Accepts foods appropriate for Cichlidae species.

Compatibility Notes: Typical semi-aggressive Cichlidae species.

Tank Setup & Water Parameters

Tank Requirements

Minimum Tank Size
40 gallons
Recommended Tank Size
60 gallons
Swimming Level
middle

Water Parameters

Temperature
7582°F
pH Range
6.57.5
Hardness (dGH)
515
Water Type
freshwater

Behavior & Temperament

Temperament
semi-aggressive
Aggression Level
3/5
Schooling
No
Territorial
Yes
Fin Nipper
No
Predatory
No
Diet Type
omnivore
Growth Rate
moderate

Typical semi-aggressive Cichlidae species.

Breeding

Breeding Type
egg layer
Breeding Difficulty
moderate
Lifespan
9 years

Ideal For

40 gallon

Compatible Tank Mates

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