Astronotus ocellatus
Also known as: Black Oscar, Melanistic Oscar
Origin: South America (captive line)
The Black Oscar is produced through selective breeding for melanin overexpression, resulting in a fish with a predominantly dark charcoal-black or deep olive-black body with minimal expression of the typical orange-red markings. Some individuals may show faint orange flecks or a subtle iridescent sheen on the scales, but the overall appearance is dark and dramatic.
Black Oscars are a striking choice for aquarists who appreciate a more understated, sleek aesthetic compared to the high-contrast Tiger or bright Red Oscar forms. Against a light-coloured substrate and background, the deep black colouration stands out dramatically and creates a powerful visual impact in large display aquariums.
All Oscar traits of intelligence, interaction, and assertiveness are fully present in the Black Oscar. Care requirements are identical to other Oscar variants.
Water: 23–28°C, pH 6.0–7.5; standard Oscar water parameters; large weekly water changes. Tank: 400L minimum; light-coloured substrate enhances the dark body contrast; strong filtration. Feeding: Carnivore; large pellets, frozen foods; avoid excessive colour-enhancing foods that may shift pigmentation. Breeding: Open substrate spawner; standard Oscar breeding behaviour. Compatibility: Aggressive; suitable only with large robust cichlid tankmates.
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