Tank setup
A minimum 400L aquarium suits Oscar. Use robust décor and sight breaks; territorial species need defined territories.
Where to buy
Compare prices from SA aquarium shops listing Oscar.
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Overview
What to know before you buy.
The Oscar is arguably the most popular large cichlid in the freshwater hobby, beloved for its dog-like intelligence, individual personality, and willingness to interact with its owner. Originating from the Amazon basin, Oscars come in a wide variety of colour morphs including Tiger, Red, Albino, and Lemon. They are voracious feeders with rapid growth rates, easily reaching 35 centimetres within their first year. Despite their charm, they are messy eaters that require powerful filtration.
Key traits
aggressive
territorial
large
moderate
carnivore
freshwater
aquarium
Compatibility
Select a tank to see how this species fits.
Care guide
Everything you need to keep Oscar healthy in a South African setup.
Water parameters
Keep pH 6–8 and 22–28°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Feeding
Oscar is carnivore. Feed a varied diet appropriate for monster fish — quality flakes, pellets, or frozen foods sized to the mouth.
Behaviour
Oscar is generally aggressive. Observe during feeding and at lights-out for true temperament.
Tankmates
Pair with similarly sized aggressive tankmates in monster fish. Avoid fin-nippers or species that outgrow this fish.
Breeding
Breeding notes for Oscar vary by line and water chemistry — ask your local shop about proven pairs in SA.
Keeping monster fish?
Big fish are big waste producers — oversized filtration and heavy-duty food carry the tank.
Availability confirmed with the distributor before dispatch · free delivery over r750
Community photos
From hobbyists across SA.
Photo by FishHubAdmin
Often kept with
Real pairwise verdicts for Oscar, not a same-category guess. Always confirm adult size and your tank's specifics before buying.
- Often kept together
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In a 2000L+ tank
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Labidochromis caeruleus
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Red Devil Cichlid
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In a 400L+ tank
- Often kept together
Asian Arowana
Scleropages formosus
In a 1250L+ tank
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Fahaka Pufferfish
Tetraodon lineatus
In a 500L+ tank
- Often kept together
Ornate Bichir
Polypterus ornatipinnis
In a 600L+ tank
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Fire Eel
Mastacembelus erythrotaenia
In a 700L+ tank