Keyhole Cichlid

The Keyhole Cichlid (Cleithracara maronii) is a peaceful and attractive South American species, ideal for community aquariums. Native to the calm, slow-moving rivers and floodplains of the Orinoco and Amazon basins, it is named for the distinctive black "keyhole" marking on its body. Its gentle nature and modest size make it a popular choice for both beginner and experienced aquarists. Features of Keyhole Cichlid Grows up to 10–12 cm in length Pale golden to beige body with a distinctive black keyhole-shaped marking Rounded fins and a shy, peaceful disposition Shows subtle colour changes based on mood or during breeding Hardy and adaptable when kept in stable water conditions The Best Aquarium Size for Keyhole CichlidA tank of at least 100 litres is recommended for a pair or small group, providing enough space for swimming and territory without stress. Tank Mate Compatibility for Keyhole CichlidKeyhole Cichlids are very peaceful and do best with calm, non-aggressive species such as: Tetras (e.g., Rummy Nose, Ember, Cardinal) Corydoras catfish Dwarf gouramis Bolivian Rams Peaceful livebearers like Platies Avoid large, aggressive cichlids or fin-nipping species. Diet for Keyhole CichlidOmnivorous and easy to feed. A balanced diet includes high-quality flakes or pellets, supplemented with frozen or live foods like bloodworms, brine shrimp, and daphnia for optimal health and coloration. Aquarium Setup for Keyhole Cichlid Aquarium FiltrationUse gentle but effective filtration. These fish prefer calm waters similar to their natural slow-moving habitats. Aquarium PlantsLive plants such as Java fern, Amazon swords, and Anubias are ideal. Keyholes will not usually disturb plants and appreciate cover. Aquarium LightingLow to moderate lighting replicates their natural environment and helps reduce stress. Aquarium HeatingKeep the water temperature stable between 24°C and 27°C. Aquarium SubstrateUse fine sand or smooth gravel to mimic riverbed conditions. Darker substrates help bring out their colour. Aquarium DecorationsAdd driftwood, caves, and smooth rocks to provide hiding spots and help the fish feel secure. A well-decorated tank encourages natural behaviour and breeding.