Oscar Red (Astronotus Ocellatus)
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Description
Oscar Red (Astronotus ocellatus)
The Red Oscar is a majestic and intelligent "wet pet" known for its deep, solid red-orange coloration. Set against a dark charcoal-colored head and fins, their bright flanks make them one of the most visible and impressive fish in a large aquarium. Like all Oscars, they are celebrated for their "dog-like" personality—they will watch you through the glass, recognize the person who feeds them, and can even be trained to accept food directly from your hand.
Key Information
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Common Name: Red Oscar, Solid Red Oscar
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Scientific Name: Astronotus ocellatus
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Origin: South America (Amazon Basin) - This color morph is captive-bred.
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Max Size: 30–35 cm
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Lifespan: 10–15 years
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Temperament: Semi-aggressive (Highly territorial)
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Diet: Omnivore/Predator – Requires high-protein cichlid pellets, frozen krill, earthworms, and crickets.
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Care Level: Moderate (Due to size and high waste production)
Water Parameters
| Parameter | Value |
| Temperature: | 23–27°C |
| pH: | 6.0–7.5 |
| Hardness: | 5–20 dGH |
| Minimum Tank Size: | 285L (75 Gallons) for one adult |
Behaviour & Tank Compatibility
Red Oscars are territorial and highly observant. They are best kept as a single specimen or in a mated pair. If kept in a community tank, it must be a massive setup (500L+) with other large, robust species. Ideal companions include Silver Dollars, Tinfoil Barbs, or large Loricariid catfish. Avoid keeping them with smaller fish; if it fits in their mouth, it will eventually be eaten.
Ideal Tank Setup
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Heavy-Duty Filtration: Oscars produce a significant bioload. Over-filtration (canisters or sumps) is mandatory to prevent ammonia spikes.
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Redecorating: They love to move decor. Use large, heavy driftwood and rocks. Avoid delicate live plants, as they will likely be uprooted.
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Sand Substrate: Sand is easier to siphon and keep clean, which is essential given the waste these large fish produce.
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Equipment Protection: They are strong enough to break glass heaters. Use plastic guards or move equipment to a sump if possible.
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Strict Maintenance: Prone to "Hole-in-the-Head" disease if nitrates are high. A 50% weekly water change is the industry standard for Oscar health.
Why Choose the Red Oscar?
The Red Oscar is for the aquarist who wants an interactive companion with a stunning, high-impact look. Their solid red color provides a warm, glowing aesthetic that looks particularly beautiful under high-quality LED lighting. For those ready to commit to a large tank and a rigorous cleaning schedule, the Red Oscar is an incredibly rewarding, long-lived pet.
