Blue Damselfish
Chrysiptera cyanea
What you need to keep a Blue Damselfish
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Seachem Reef Carbonate
From R161Sizes
Seachem Ammonia Alert
R267
Seachem Reef Iron
From R162Sizes
Seachem Reef Phosphorus
From R162Sizes
pH
8–8.4
Temperature
24–27 °C
Where to buy
Compare prices from SA aquarium shops listing Blue Damselfish.
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Overview
What to know before you buy.
A very popular, electric blue fish known for its extreme hardiness. While generally small, they can become quite territorial towards similar-sized tank mates.
Key traits
Care guide
Keeping Blue Damselfish healthy in a South African setup.
Tank setup
Size the aquarium to Blue Damselfish's adult size and activity level. Use robust décor and sight breaks so each fish can hold its own space.
Water parameters
Keep pH 8–8.4 and 24–27°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. Watch it at feeding time and at lights-out to see its real temperament in your tank.
Tankmates
Choose robust tankmates of similar size, and nothing small enough to be eaten. Add Blue Damselfish last so territories reset.
Breeding
Breeding success with Blue Damselfish depends on the line and water chemistry; ask your shop about proven pairs.
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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