Blue Tetra
Boehlkea fredcochui
What you need to keep a Blue Tetra
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pH
6–7.5
Temperature
22–27 °C
Where to buy
Compare prices from SA aquarium shops listing Blue Tetra.
Avg. price
R40
across 2 shops
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Overview
What to know before you buy.
A very active and fast-swimming species, the Blue Tetra has a subtle iridescent blue sheen that becomes more vibrant depending on the lighting and mood. They can be slightly nippy, so they are best kept in a larger school and with robust, fast-moving tankmates. Their energy makes for a lively display.
Key traits
Care guide
Keeping Blue Tetra healthy in a South African setup.
Tank setup
Size the aquarium to Blue Tetra's adult size and activity level. Use robust décor and sight breaks so each fish can hold its own space.
Water parameters
Keep pH 6–7.5 and 22–27°C. Stable parameters matter more than chasing perfect numbers; acclimate new arrivals slowly.
Feeding
Omnivore. Feed small amounts it clears in a couple of minutes, and vary the diet.
Behaviour
Semi-aggressive. Keep it in a group for natural behaviour.
Tankmates
Choose robust tankmates of similar size, and nothing small enough to be eaten. Add Blue Tetra last so territories reset.
Breeding
Breeding success with Blue Tetra depends on the line and water chemistry; ask your shop about proven pairs.
Settling this fish in?
Condition the tap water, seed the filter, test through the first weeks — most early losses trace back to one of those.
10% off your first order, no code, at checkout
Availability confirmed with the distributor before dispatch · free delivery over r750
Community photos
From hobbyists across SA.
Market intelligence
Price trends and buyer demand — data only FishHub tracks.
Price tracking started 18 Jul 2026 — chart builds as listings are updated
Demand by province
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