Tank setup
Size the aquarium to Koi's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
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What to know before you buy.
Koi are ornamental varieties of carp, famous for their beauty, size, and longevity, often kept in outdoor ponds. They come in a vast array of colors and patterns, such as Kohaku, Sanke, and Showa. While peaceful, their massive size and waste production make them unsuitable for all but the largest indoor aquariums.
Key traits
Select a tank to see how this species fits.
Everything you need to keep Koi healthy in a South African setup.
Size the aquarium to Koi's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Keep pH 7–8.5 and 15–25°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Koi is an omnivore. Feed a varied diet appropriate for freshwater fish — quality flakes, pellets, or frozen foods sized to the mouth.
Koi is generally peaceful. Observe during feeding and at lights-out for true temperament.
Pair with similarly sized peaceful tankmates in freshwater fish. Avoid fin-nippers or species that outgrow this fish.
Breeding notes for Koi vary by line and water chemistry — ask your local shop about proven pairs in SA.
From hobbyists across SA.
Price trends and buyer demand — data only FishHub tracks.
SA price range this month: R15–4000 · Average: R766
This data is unique to FishHub
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Species that typically work alongside Koi in a similar setup.
Lionhead Goldfish
Carassius auratus
Oranda
Carassius auratus
Veiltail Goldfish
Carassius auratus
Shubunkin
Carassius auratus
Jikin Goldfish
Carassius auratus
Guppy
Poecilia reticulata
Molly
Poecilia sphenops
Balloon Molly
Poecilia sphenops (deformed variety)