What size tank does a Keyhole Cichlid need?

Keyhole Cichlid needs a minimum of 20 gallons, with 30 gallons recommended. They are middle swimmers.

Is Keyhole Cichlid good for beginners?

Keyhole Cichlid is rated "beginner" difficulty (2/5). Great for beginners.

What fish are compatible with Keyhole Cichlid?

Keyhole Cichlid is peaceful. Compatible tank mates include other peaceful fish with similar water parameters (pH 6-7.5, temp 72-79°F).

Keyhole Cichlid

Cleithracara maronii

Family: Cichlidae • Origin: South America

The Keyhole Cichlid is possibly the most peaceful cichlid in existence. Named for the keyhole-shaped marking on its side. Very shy.

Min Tank

20 gal

Max Size

Temperature

72-79°F

6-7.5

Lifespan

8 years

School Size

Solo OK

Swim Level

middle

Hardness

3-12 dGH

peacefulbeginneromnivore

Is Keyhole Cichlid Right for Your Tank?

Keyhole Cichlid is an excellent choice for beginners — rated "beginner" difficulty (2/5). They're hardy, forgiving of minor water parameter fluctuations, and generally easy to feed. A 20-gallon tank minimum is standard — most community setups will accommodate them.

With a peaceful temperament, Keyhole Cichlid makes a great community fish. They coexist well with other non-aggressive species of similar size. Expected lifespan: 8 years with proper care.

Common Mistakes with Keyhole Cichlid

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Putting them in a tank under 20 gallons

Many beginners underestimate tank size needs. Keyhole Cichlid requires at least 20 gallons — ideally 30. Cramped tanks lead to stunted growth, aggression, and poor water quality.

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Skipping the quarantine period

Even healthy-looking fish can carry parasites or disease. Quarantine new Keyhole Cichlid for 2–4 weeks in a separate tank before adding to your main aquarium.