Tank setup
Size the aquarium to Ruby Tetra's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Axelrodia riesei
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What to know before you buy.
A stunning nano fish, the Ruby Tetra displays an intense, ruby-red coloration, especially in males. They are shy and do best in a dedicated species tank or with other very small, peaceful fish and shrimp. A heavily planted tank with soft, acidic water is required to see them at their best.
Key traits
Select a tank to see how this species fits.
Everything you need to keep Ruby Tetra healthy in a South African setup.
Size the aquarium to Ruby Tetra's adult size and activity level. Match décor to natural behaviour — plants, rockwork, or open swimming room as needed.
Keep pH 5–6.5 and 23–28°C. Stable parameters matter more than chasing perfect numbers — acclimate new arrivals slowly.
Ruby Tetra is an omnivore. Feed a varied diet appropriate for freshwater fish — quality flakes, pellets, or frozen foods sized to the mouth.
Ruby 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 Ruby Tetra vary by line and water chemistry — ask your local shop about proven pairs in SA.
From hobbyists across SA.
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Price tracking started 18 Jul 2026 — chart builds as listings are updated
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Species that typically work alongside Ruby Tetra in a similar setup.
Green Neon Tetra
Paracheirodon simulans
Ember Tetra
Hyphessobrycon amandae
Cardinal Tetra
Paracheirodon axelrodi
Pristella Tetra
Pristella maxillaris
Glass Bloodfin Tetra
Prionobrama filigera
Flame Tetra
Hyphessobrycon flammeus
Rosy Tetra
Hyphessobrycon rosaceus
Buenos Aires Tetra
Hyphessobrycon anisitsi