Costae Tetra
Moenkhausia costae
What you need to keep a Costae Tetra
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pH
6–7.5
Temperature
23–27 °C
Max size
8 cm
Min tank
100 L
Where to buy
Compare prices from SA aquarium shops listing Costae Tetra.
Avg. price
R55
across 2 shops
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Overview
What to know before you buy.
A silver tetra marked with a bold black wedge and a bright caudal spot. Larger and more robust than most community tetras, and best kept in a group with room to move.
Care guide
Keeping Costae Tetra healthy in a South African setup.
Tank setup
A minimum 100L aquarium suits Costae Tetra. Provide hiding spots and stable, well-filtered water; it suits a community setup.
Water parameters
Keep pH 6–7.5 and 23–27°C. Stable parameters matter more than chasing perfect numbers; acclimate new arrivals slowly.
Feeding
Omnivore — flake, frozen. Feed small amounts it clears in a couple of minutes, and vary the diet.
Behaviour
Peaceful, active shoaler. Watch it at feeding time and at lights-out to see its real temperament in your tank.
Tankmates
Choose tankmates of similar size and temperament with the same water needs. Avoid fin-nippers and anything large enough to eat it.
Breeding
Breeding success with Costae 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 21 Aug 2026 — chart builds as listings are updated
Demand by province
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