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Harlequin Tusk (Choerodon fasciatus)

Harlequin Tusk

Choerodon fasciatus
Family
Wrasse / Labridae
Care level
Intermediate
Temperament
Semi-aggressive
Reef safe
Reef safe with caution
Max size
25 cm
Min tank
400 L · 106 gal
Origin
Western Pacific (Great Barrier Reef, Australia)
Diet
Carnivore
Food
Mysis, Brine shrimp, Marine pellets, Frozen carnivore blends

Overview

The Harlequin Tusk is a strikingly coloured Australian native wrasse with a deep blue-black body crossed by bold orange horizontal bands, and distinctive tusk-like protruding teeth used for prying prey out of rock crevices. It's a genuine showpiece fish for a reef or fish-only tank, combining vivid colour with an active, engaging personality.

It's a hardy, confident feeder once settled, generally adapting well to aquarium life and readily accepting a wide range of prepared foods.

Given its adult size and predatory feeding habits toward small invertebrates, it does best in a larger, well-established tank with careful thought given to smaller crustacean tankmates.

Compatibility

Harlequin Tusks can be semi-aggressive, particularly toward other wrasses of similar size and shape, and may become territorial as they mature. They generally coexist well with tangs, angelfish, and other robust community fish.

This species is rated reef safe with caution — it won't touch stony or soft coral, but its tusk-like teeth are well suited to hunting small crustaceans and snails, posing a risk to ornamental shrimp and similar invertebrates.

Health & quarantine

This is a hardy, adaptable wrasse with few chronic health issues, though like most wrasses it's a capable jumper, so a secure lid is important. A minimum four-week quarantine is recommended good practice, and this species generally acclimates and feeds confidently without major issues.

Frequently asked questions

Is the Harlequin Tusk reef safe?
Rated reef safe with caution — it won't touch coral but will hunt small crustaceans and snails using its distinctive tusk-like teeth.
How big does a Harlequin Tusk get?
Up to around 25cm, requiring a large, well-established tank.
Is the Harlequin Tusk aggressive?
It can be semi-aggressive, particularly toward other wrasses of similar size and shape as it matures.
Is the Harlequin Tusk an Australian native?
Yes, it's found on the Great Barrier Reef and wider Western Pacific waters.
Does a Harlequin Tusk need a sand bed?
Yes, it may bury itself in sand at night or when startled, so a soft, sufficiently deep sand bed is beneficial.

Care guidance is drawn from our own experience — every fish is an individual, so treat it as a starting point, not a guarantee. Not sure if a species suits your tank? Come ask us in store. New to the terms? Read the care-terms glossary.