Threadfin Butterflyfish
Chaetodon auriga
What you need to keep a Threadfin Butterflyfish
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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
20 cm
Min tank
400 L
Where to buy
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Overview
What to know before you buy.
A hardy butterflyfish with a trailing dorsal filament, and one of the better beginners in the group. It will sample corals and anemones, so keep it in a fish-only system.
Care guide
Keeping Threadfin Butterflyfish healthy in a South African setup.
Tank setup
A minimum 400L aquarium suits Threadfin Butterflyfish. Provide hiding spots and stable, well-filtered water; it suits a community setup.
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 — meaty frozen foods. Feed small amounts it clears in a couple of minutes, and vary the diet.
Behaviour
Peaceful; not reef safe. 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 Threadfin Butterflyfish depends on the line and water chemistry; ask your shop about proven pairs.
Community photos
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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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