Your Guide to Buying and Adding a Harlequin Tusk Fish to Your Tank

The Harlequin Tusk Fish, scientifically known as Choerodon fasciatus, is an incredibly striking and distinctive marine fish hailed for its vivid coloration and pronounced tusk-like teeth. Originating from the waters of the Indo-Pacific, it's a favourite among many aquarium enthusiasts.

Choosing the Right Harlequin Tusk Fish

When you're in the market for a Harlequin Tusk Fish:

• Look for individuals that are vibrant in colour, indicating good health.
• Ensure the fish is alert, swimming actively, and free from any visible signs of disease or distress.

Physical Appearance

Characteristics that make the Harlequin Tusk Fish stand out:

• Dominated by blue and green bands interspersed with orange stripes, this fish is an attention-grabber.
• Its most distinct feature is its four pairs of tusk-like teeth protruding from its mouth, which can be seen even when its mouth is closed.
• Adult fish can grow up to 10 inches in length in captivity.

Compatibility with Other Fish

Considering tank mates:

• Harlequin Tusk Fish tend to be semi-aggressive.
• It's crucial to avoid housing them with much smaller fish or invertebrates that they might see as food.
• They can coexist with larger and equally assertive fish, provided there's enough space for each to establish its territory.

Reef Safe

Reef considerations:

• Generally, Harlequin Tusk Fish are not considered 100% reef safe.
• They might snack on some invertebrates like snails, crabs, and shrimp. However, they tend to leave corals alone.

Suitable Tank Size

To ensure they have enough room:

• A minimum tank size of 450 litres is recommended for a single Harlequin Tusk Fish.
• Given their potential size and territorial nature, providing ample space is crucial.

Water Conditions

Ideal conditions for their well-being:

• Temperature: 22-26°C
• pH levels: 8.1-8.4.
• Specific gravity: 1.020-1.025.
• As always, ensure ammonia and nitrites are at zero and keep nitrates minimal.

Preparing Your Tank

Setting up the perfect environment:

• Offer plenty of hiding spots with caves and rockwork.
• Keep the substrate relatively shallow, as they are not burrowers.
• Ensure a moderate to strong current to mimic their natural environment.

Monitoring Behaviour

Observations to make:

• Harlequin Tusk Fish are territorial and will often establish a favourite spot in the tank.
• While aggression can be evident during feeding or when introduced to new tank mates, they generally settle with time.

Feeding Schedule

Catering to their dietary needs:

• They are carnivorous and will appreciate a varied diet of meaty foods such as shrimp, squid, and small fish.
• They should be fed once or twice daily in captivity.

The Harlequin Tusk Fish, with its unparalleled coloration and impressive teeth, can be the centerpiece of any large marine tank. As always, providing them with the appropriate environment and care will ensure they live a healthy, vibrant life in your care.