🚚 Dry goods ship Australia-wide 🐠 Livestock — buy online, collect in store 🧪 In-store water analysis
Fish

Humbug Damsel

Dascyllus aruanus
$25Out of stock
Pickup in store onlySold
Buy online and collect at 280 North Road, Eastwood NSW 2122.
Open Mon–Sat 10am–6pm · Sun 1pm–6pm. Usually ready the same day.
Livestock is collection only — we don't ship live coral or fish. Anything else in the same order is ready to grab when you collect.
Currently out of stock — ask us in store about availability.
Out of stock — join the waiting list

Tell us the size and sex you're after and we'll source this fish from our suppliers, then email you the moment it's in.

Join the waiting list →
  • Kept in our system until you collect

About this fishWhat do these mean?

FamilyDamselfish / Pomacentridae
Max size8 cm
Minimum tank100 L · 26 gal
Care levelBeginner
Reef compatibilityReef safe
DietOmnivore
TemperamentSemi-aggressive
OriginIndo-Pacific

See the full care profile →

Overview

The Humbug Damsel is a small, boldly striped black-and-white fish, one of the most recognisable and widely available damselfish in the marine hobby thanks to its low cost, hardiness, and distinctive zebra-like pattern. It's a common choice for cycling new tanks or adding easy, low-cost activity to a beginner setup.

Its small size and adaptability mean it tolerates a wide range of water conditions better than most other reef fish, making it forgiving of the inevitable rough edges in a newly established system.

Like many damselfish, it can become territorial and somewhat aggressive as it matures, particularly in smaller tanks, so this is worth planning for before purchase rather than a surprise later on.

Compatibility

Humbug Damsels can be semi-aggressive, especially as they mature, and may bully smaller or more passive tankmates introduced after them, particularly in tanks under 200 litres. They do best introduced early in a tank's stocking order, kept in a group of several individuals to spread out aggression, or kept with similarly robust tankmates.

They are fully reef safe and won't bother corals, clams, or invertebrates.

Health & quarantine

This is one of the hardiest fish in the marine hobby, often used to help cycle new tanks due to its tolerance of less-than-perfect water conditions. A standard quarantine period of two to four weeks is still good practice, though this species rarely has acclimation issues.

Frequently asked questions

Is the Humbug Damsel reef safe?
Yes, fully reef safe with corals and invertebrates.
Will my Humbug Damsel become aggressive?
It can become territorial as it matures, especially in smaller tanks, so plan tankmates and stocking order with this in mind.
Can I keep multiple Humbug Damsels together?
Yes, keeping a small group can help spread out aggression compared to a single individual dominating a territory alone.
Is the Humbug Damsel a good fish to cycle a new tank?
Yes, it's one of the hardiest marine fish available and commonly used for this purpose, though fishless cycling is now generally preferred.
What tank size suits a Humbug Damsel?
100 litres is a reasonable minimum given its small size, though more room reduces territorial issues.
Marine aquarium parametersOur recommended stable range for marine fish
Temp
24–26°C
Salinity
1.020–1.025
pH
8.1–8.4
Ammonia
0 ppm
Nitrite
0 ppm
Nitrate
< 40 ppm
Stability matters more than chasing perfect numbers. Quarantine new fish before adding them.

How collection works

1

Order & pay online

Check out and pay securely. We set it aside and hold it ready for you.

2

We get it ready

It stays in our system until you come in — usually ready the same day.

3

Collect in store

Drop in to 280 North Road, Eastwood, and pick it up.

You might also like

View all marine fish