Species Description…

Scientific Name: Choerodon fasciatus

Common Name: Harlequin Tuskfish

Species Group: Wrasses

Habitat: Reef Safe with Caution

Care Level: Intermediate

Temperament: Semi-aggressive

Diet Type: Carnivore

Role in Aquarium: Showpiece Fish

Max Fish Length: 12 (inches)

Min Aquarium Size: 120 (gallons)

Native Range: Indo-Pacific, primarily found in Australia and the Coral Sea

Choerodon Fasciatus - The Harlequin Tuskfish

Choerodon Fasciatus (The Harlequin Tuskfish)

Native to the Indo-Pacific region, commonly found in coral reefs, lagoons, and rocky outcrops.
Known for its striking coloration, featuring bright orange bands, iridescent blue markings, and sharp blue tusk-like teeth.
A hardy and semi-aggressive species that requires ample space and structured rock formations.
Typically observed alone or in small groups, preferring sheltered reef environments.
Best suited for large aquariums with stable water conditions and compatible tankmates.

Carnivorous, primarily feeding on crustaceans, mollusks, and small fish in the wild.
Requires a varied diet including frozen shrimp, squid, clams, and high-quality marine pellets.
Readily adapts to prepared foods but benefits from occasional live food offerings.
Should be fed multiple small meals per day to maintain its energy levels and digestive health.
A diet rich in protein supports strong jaw and teeth development, preventing malnutrition.

Prefers coral reef environments with moderate water flow and rocky formations.
Often found hiding within reef crevices and exploring sandy areas in search of food.
Aquarium setups should include live rock for natural grazing and shelter.
Requires well-oxygenated water with stable parameters to prevent stress.
Providing a mix of open swimming spaces and hiding spots promotes natural behaviors.

Optimal water temperature: 75-82°F (24-28°C) to maintain overall health.
Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
Requires high-quality filtration and routine water changes to ensure stable conditions.
Not considered reef-safe, as it may prey on small invertebrates and crustaceans.
Providing live rock encourages natural hunting behavior and minimizes boredom.

Semi-aggressive but can coexist with larger, similarly tempered fish.
Compatible with angelfish, tangs, and large wrasses but may harass smaller or timid tankmates.
Not suitable for reef aquariums due to its tendency to consume crabs, shrimp, and small fish.
Should be introduced carefully to prevent aggression toward new tankmates.
Providing ample space and structured territories reduces territorial behavior.

An inquisitive and confident species that actively explores its surroundings.
Frequently observed sifting through the substrate and picking at rock surfaces.
May become territorial over specific areas of the aquarium.
Providing a complex environment with caves and rock structures encourages natural hiding and hunting instincts.
Over time, it may recognize its caretaker and become more interactive during feeding sessions.