Meta Cichlid / Yellow Acara (Aequidens metae)

Geographic Origin and Biotope: Endemic to the Orinoco river basin, with main diffusion in the Meta river (Colombia and Venezuela). Populates calm waters (blackwater or clearwater) with soft leafy substrates, avoiding the strong currents of the main channel.

Taxonomy and Morphology: Yellow Acara (Aequidens metae). A medium-sized cichlid with a compressed but muscular body. Owes its common name ("Yellow Acara") to the marked yellow-golden tones that bloom on the lower part of the face and on the belly.

Social Behavior: Classified as a "relatively peaceful" cichlid (by South American standards), except during courtship when it becomes a relentless tyrant. Loves to sift the bottom in search of food, raising clouds of detritus.

Coloration and Sexual Dimorphism: Olive/beige background interrupted by a marked horizontal line and a strong medial dark spot. Belly and throat shine with a gaudy mustard yellow. Males develop very prolonged dorsal and anal filaments and, in old age, a slight nuchal hump.

Aquarium Setup: Requires a spacious tank (120 cm / 48 inches). River sand absolutely free of sharp edges is vital for its digging habits. Likes submerged roots (Manzanita) and epiphytic plants. Dim light enhances its iridescence.

Diet and Feeding: Micro-predator and omnivore. Provide a base of specific pellets for South American cichlids enriched with carotene, regularly accompanied by bloodworms, krill, chopped shrimp and a vegetable intake (spirulina).

Water Quality: Tolerates heat very well (up to 30°C / 86°F) but strictly demands soft and acidic water (pH 5.0-7.0) enriched with tannins. Sensitive to increased nitrates: requires massive weekly changes.

Compatibility and Tankmates: To be kept in an isolated pair if aiming for reproduction, or in robust community aquariums with reassuring fish (Dither fish) such as large South American Tetras, large Corydoras and peaceful Plecos. Will eat small fish.

Aquarium Reproduction: Proudly monogamous. They lay up to 300 eggs on a flat substrate (smooth rock or root). Both parents fiercely care for the brood and will later guide the swarm of fry sifting the sand to feed them.

Risks and Diseases: Vulnerable to wasting (Hole in the Head) if kept in waters that are too hard or polluted. Avoid exuberant tankmates (like Oscars) that would suppress it through stress.