Description
Keyhole Cichlid (Cleithracara maronii)
The Keyhole Cichlid is one of the most peaceful and gentle cichlids, making it a favorite for community aquariums. Native to the slow-moving rivers and swamps of Guyana, Trinidad, and Venezuela, this species gets its name from the distinctive keyhole-shaped black marking on its golden-beige body. While its coloration is subtle compared to some cichlids, its calm temperament, graceful swimming, and unique personality make it a true hidden gem for aquarists.
Keyhole Cichlids thrive in planted aquariums with driftwood, caves, and soft substrates where they can establish small territories. They are hardy, adaptable, and known for forming strong pair bonds. Their shy, peaceful nature makes them excellent companions for tetras, rasboras, corydoras, and other gentle species.
Quick Facts:
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Scientific Name: Cleithracara maronii
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Common Name: Keyhole Cichlid
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Origin: South America – Guyana, Trinidad, Venezuela
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Max Size: ~4–5 inches
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Temperament: Peaceful; shy and gentle, territorial only when breeding
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Diet: Omnivorous – high-quality flakes/pellets, frozen/live foods (brine shrimp, bloodworms, daphnia), vegetable matter
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Tank Size: 30+ gallons (larger for pairs or communities)
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Water Parameters:
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Temperature: 24–28°C (75–82°F)
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pH: 6.0–7.5
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Hardness: Soft to moderate (3–12 dGH)
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Experience Level: Beginner-friendly
Why Choose the Keyhole Cichlid?
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Gentle and peaceful – one of the calmest cichlid species
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Hardy, adaptable, and suitable for beginners
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Ideal for planted community aquariums
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Subtle beauty with distinctive keyhole marking
