A humbug sweet in fish form: chalk white banded with three bold black stripes. Small groups hover above a coral head and drop into it in unison the instant a shadow passes.
Temperament
Common health issues
- Ich (white spot)
- Fin rot
- Parasites
Care at a glance
- ExerciseHigh
A busy, energetic swimmer โ keep plenty of open swimming room.
- GroomingRoutine tank care
Weekly partial water changes keep them in top shape.
- Living spaceNano-tank friendly
Happy in a small, stable, well-filtered tank.
- Owner experienceSome experience helps
A little know-how makes life smoother.
- Commitment6โ12 years
Plan for a long, loving relationship.
Health to watch: Ich (white spot) ยท Fin rot ยท Parasites
๐ Care guide
The Humbug or Whitetail Damselfish (Dascyllus aruanus) is widespread across the Indo-Pacific, including the Red Sea, and stays small at about 6 to 8 cm. Its three black bars on a white body, with a clear white tail, make it one of the most recognisable reef fish. In nature it lives in tight colonies over branching Acropora, diving into the branches together when threatened. It is very hardy at 24-27C, salinity 1.023-1.026, pH 8.1-8.4, and eats flake, pellets, mysis and enriched brine without hesitation. A 120 litre or larger tank with a branching coral or rock thicket lets a group of three to five display its natural huddling behaviour. Honesty about the downside: like most Dascyllus it grows increasingly territorial with age, and a mature individual will defend its coral head against much larger fish. It suits a robust community, not a tank of shy dartfish and small gobies.
Frequently asked questions
How active is a Humbug Damselfish?
High. A busy, energetic swimmer โ keep plenty of open swimming room.
How much maintenance does a Humbug Damselfish need?
Routine tank care. Weekly partial water changes keep them in top shape.
What tank size does a Humbug Damselfish need?
Nano-tank friendly. Happy in a small, stable, well-filtered tank.
Is a Humbug Damselfish a good fit for first-time owners?
Some experience helps. A little know-how makes life smoother.
How long do Humbug Damselfish live?
6โ12 years. Plan for a long, loving relationship.
What health issues affect the Humbug Damselfish?
Keep an eye out for Ich (white spot), Fin rot, Parasites. These are worth raising with your vet, along with any screening they recommend.
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