Three Spot Domino Damselfish
Dascyllus trimaculatus
What you need to keep a Three Spot Domino 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
8.1–8.4
Temperature
24–27 °C
Max size
14 cm
Min tank
200 L
Where to buy
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Overview
What to know before you buy.
Appealing as a spotted juvenile and genuinely bullying as an adult, when it will dominate a tank. Extremely hardy, which is both its strength and the reason it is often regretted.
Care guide
Keeping Three Spot Domino Damselfish healthy in a South African setup.
Tank setup
A minimum 200L aquarium suits Three Spot Domino Damselfish. Use robust décor and sight breaks so each fish can hold its own space.
Water parameters
Keep pH 8.1–8.4 and 24–27°C. Stable parameters matter more than chasing perfect numbers; acclimate new arrivals slowly.
Feeding
Omnivore — frozen and prepared foods. Feed small amounts it clears in a couple of minutes, and vary the diet.
Behaviour
Very aggressive as it matures. 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 Three Spot Domino Damselfish last so territories reset.
Breeding
Breeding success with Three Spot Domino Damselfish depends on the line and water chemistry; ask your shop about proven pairs.
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