Keyhole Cichlid Care Guide
Cleithracara maronii · Freshwater Fish
What Keyhole Cichlid look like
The Keyhole Cichlid (Cleithracara maronii) exhibits a laterally compressed, oval body shape, typically reaching a maximum adult size of approximately 4 inches (10 cm), with some individuals growing slightly larger. This species displays sexual dimorphism, with males generally exhibiting more vibrant coloration and larger dorsal and anal fins compared to females. A distinctive feature of this cichlid is the prominent keyhole-shaped marking located on the upper flank, characterized by a dark spot with a narrow stripe extending downward, which resembles a keyhole. Additionally, a dark stripe runs through the eye, enhancing its unique appearance. The body coloration ranges from pale cream to light brown, providing effective camouflage among its natural habitat of submerged structures. Defensive adaptations include a peaceful demeanor and the ability to retreat into crevices or among aquatic vegetation when threatened, rather than exhibiting aggressive displays.
Behavior & temperament
Keyhole Cichlids are generally peaceful and can be considered semi-social, often forming loose aggregations rather than strict schools. They typically inhabit the mid to lower water column, preferring to dwell near the substrate and among submerged structures, which provide cover and breeding sites. Their breeding behavior is characterized as an egg scatterer, where they lay adhesive eggs on flat surfaces, often in hidden locations. In terms of temperament, they are relatively docile, making them suitable for community tanks, although they may exhibit territorial behavior during breeding periods.
Diet & feeding
In the wild, Keyhole Cichlids are omnivorous, feeding on a varied diet that includes small invertebrates, plant matter, and detritus. In captivity, they thrive on a balanced diet of high-quality flake food, supplemented with live or frozen foods such as brine shrimp and bloodworms, along with vegetable matter to ensure proper nutrition.
Behind the name
Cleithracara (cleithrum; a bone in the fish's shoulder girdle) and maronii (named in honor of a person, possibly a researcher or naturalist).
Plan your tank
Check the numbers before you buy: tank volume, a stocking plan, cycle progress, water changes, and your ongoing care routine.
Keeping Keyhole Cichlid?
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