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Curated by the Fast Aquatics editorial team. Updated May 2026. Reviewed against vendor + breeder records, IUCN listings, and references from SeriouslyFish, FishBase, and the Coral Reef Information Network. Husbandry guidance is field-tested by Fast Aquatics vendor-side aquarists and cross-referenced with peer publications.
Scientific name
Choerodon fasciatus
Family
Wrasse (Labridae) - Choerodon
Adult size
8-12"
Min tank size
125 gallons
Temperature
74-82°F
Salinity
1.024-1.026
Temperament
Semi-aggressive to aggressive
Difficulty
Intermediate
Lifespan
10-15 years

About the Harlequin Tuskfish

Harlequin tuskfish is one of the most striking large wrasses — bold orange/red/blue bands across body with bright blue prominent canine teeth visible from outside the mouth. Australian specimens (more colorful) command premium pricing over Indonesian (less vivid). Not reef safe with small inverts.

Native range: Western Pacific (Australia, Japan). Wrasses (family Labridae) are one of the most diverse and successful fish families on coral reefs — approximately 600 described species worldwide, of which 40-60 are commonly available in the marine aquarium trade. The Harlequin Tuskfish is part of the Wrasse (Labridae) - Choerodon grouping, characterized by elongated body shape, terminal-phase sex change (most species), and active reef-grazing or pest-control behavior.

Tank requirements and aquascape

Tank size: 125 gallons. Sand substrate is non-negotiable for sand-sleeping wrasse genera (Halichoeres, Macropharyngodon, Anampses) — 2-3 inches of fine pool-filter sand minimum. Rockwork should provide multiple cave entrances and tight crevices the fish can wedge into for sleeping or escape. Lid: tight-fitting, gap-free. Wrasses are the second-most-common jumping casualties in reef tanks after gobies — a single 1cm gap is enough.

Flow: moderate to moderately strong is preferred by most wrasses — they evolved on current-swept reefs. Lighting: standard reef LED works for all wrasses; the fish itself does not require special spectrum.

Diet and feeding

Carnivore — meaty foods, frozen, pellets. Most wrasses have very high metabolic rates and need 2-3 feedings daily. Skipping feedings during business travel or vacations leads to rapid condition loss — schedule automatic feeders or vendor-trusted tank-sitters for extended absences.

Compatible tank mates

Safe: Large reef-safe community 4"+ — tangs, large angels, large clowns.

Avoid: Small fish, small inverts, anything small enough to be food.

Breeding

Not captive bred. Most wrasses are protogynous hermaphrodites — born female, transition to male as they reach social dominance in a group. Tank breeding of wrasses is rare due to the complex behaviors and pelagic egg-laying that resists captive replication.

Common problems and solutions

Tank-mate predation on small species; aggression; bite injuries to keepers.

Keeper note: Verify source — Australian specimens are more colorful and more expensive. Tongs only for feeding — the canine teeth bite hard.

Frequently asked questions

Is harlequin tuskfish reef safe?

Coral-safe with reservations on small soft corals. NOT invert-safe — will eat ornamental shrimp, small snails, hermits, small crabs.

What is the difference between Australian and Indonesian harlequin tusks?

Australian specimens have more saturated red/orange bands. Indonesian specimens are more muted. Australian costs 2-3x more.

How aggressive is a harlequin tuskfish?

Semi-aggressive to aggressive. Will defend territory against newer additions. Established peaceful tank mates usually OK.

What size tank for a harlequin tuskfish?

125+ gallons due to active swimming and adult size (8-12").

Related wrasses

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