Tank setup
Size the aquarium to Diamond Tetra'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.
Named for its sparkling, iridescent scales that glitter like diamonds under aquarium lighting. The Diamond Tetra is a peaceful and relatively large tetra that develops more impressive fins and color with age. They are a wonderful addition to a community tank, adding a unique shimmer and texture.
Key traits
Select a tank to see how this species fits.
Everything you need to keep Diamond Tetra healthy in a South African setup.
Size the aquarium to Diamond Tetra's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Keep pH 6–7.5 and 24–28°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Diamond Tetra is an omnivore. Feed a varied diet appropriate for freshwater fish — quality flakes, pellets, or frozen foods sized to the mouth.
Diamond Tetra is generally peaceful. Keep in a group where possible for natural behaviour.
Pair with similarly sized peaceful tankmates in freshwater fish. Avoid fin-nippers or species that outgrow this fish.
Breeding notes for Diamond Tetra vary by line and water chemistry — ask your local shop about proven pairs in SA.
Condition the tap water, seed the filter, test through the first weeks — most early losses trace back to one of those.

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Price trends and buyer demand — data only FishHub tracks.
SA price range this month: R35–50 · Average: R41
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