Bluejaw Triggerfish – Male

Native to tropical Indo-Pacific reef environments, the Bluejaw Triggerfish is one of the more peaceful members of the triggerfish family. Its attractive coloration, intelligent behavior, and relatively mild temperament make it a popular choice among experienced saltwater aquarium enthusiasts.

At a Glance: Quick Species Facts

• Common Name: Bluejaw Triggerfish, Blue Throat Triggerfish, Gilded Triggerfish
• Scientific Name: Xanthichthys auromarginatus
• Family: Balistidae
• Sex: Male (Supplier Designation)
• Origin: Indo-Pacific Ocean
• Maximum Adult Size: Approximately 12 inches
• Recommended Minimum Aquarium Size: 125 gallons
• Care Level: Moderate
• Temperament: Semi-Aggressive
• Diet: Carnivore / Planktivore
• Reef Compatibility: Reef Safe with Caution
• Water Temperature: 74–78°F
• Specific Gravity: 1.023–1.026
• Recommended pH: 8.1–8.4

Characteristics

The Male Bluejaw Triggerfish is admired for its distinctive coloration and elegant appearance. Males display a noticeable blue patch along the lower face and throat, accompanied by a muted gray to tan body and fins highlighted with brilliant yellow margins.

These colorful markings distinguish male Bluejaw Triggerfish from females, which generally lack the same prominent blue throat and bright yellow fin edging.

Like other triggerfish, this species possesses a specialized dorsal spine mechanism that allows it to secure itself within rocky crevices.

Bluejaw Triggerfish are active swimmers with strong personalities. They frequently explore their surroundings and may develop recognizable behaviors around their aquarium environment.

Unlike many other triggerfish species, the Bluejaw Triggerfish naturally spends considerable time swimming in open water near reef slopes and drop-offs.

Optimal Aquarium Conditions & Care Guide

The Bluejaw Triggerfish thrives in a large, mature saltwater aquarium with stable water parameters, substantial open swimming space, and secure hiding locations.

A minimum aquarium size of approximately 125 gallons is recommended, with larger aquariums preferred for long-term care.

Recommended Aquarium Setup

• Live Rock: Provide established live rock with caves, crevices, and sheltered resting areas.
• Swimming Space: Maintain extensive open water for active swimming.
• Hiding Places: Incorporate rocky overhangs and secure retreat areas.
• Water Movement: Provide moderate to strong, well-distributed circulation.
• Filtration: Maintain effective biological and mechanical filtration.
• Aquarium Cover: Use a secure, tightly fitted lid to help prevent jumping.
• Aquarium Maturity: Introduce this species into an established aquarium with stable water conditions.

Stable salinity, temperature, pH, and overall water quality are essential for supporting long-term health.

Because this species is an active swimmer, open space is especially important when planning the aquarium layout.

Behavior and Tank Mates

The Bluejaw Triggerfish is generally considered one of the more peaceful triggerfish species, although it can still exhibit territorial or aggressive behavior.

Its comparatively mild temperament makes it suitable for many appropriately sized marine community aquariums.

Potential Tank Mates

• Clownfish
• Compatible tangs
• Marine angelfish
• Peaceful to moderately assertive wrasses
• Rabbitfish
• Other appropriately sized marine community fish

Compatibility depends on aquarium size, individual temperament, and available swimming space.

Keeping multiple male triggerfish together may result in territorial aggression. Male and female Bluejaw Triggerfish may coexist in sufficiently large aquariums when introduced and monitored carefully.

Reef Aquarium Compatibility

Bluejaw Triggerfish are considered reef safe with caution. Unlike many other triggerfish, they primarily feed on small organisms suspended in the water column and generally do not target healthy coral tissue.

However, individual specimens may investigate or consume smaller ornamental shrimp, crustaceans, feather duster worms, or other vulnerable invertebrates.

Carefully monitor interactions with reef inhabitants, particularly small ornamental invertebrates.

Diet and Feeding Requirements

The Bluejaw Triggerfish is a carnivorous, plankton-feeding marine fish that naturally consumes small crustaceans and other animal-based food sources.

A varied diet containing high-quality marine proteins helps support healthy growth, coloration, and overall condition.

Recommended Foods

• Frozen mysis shrimp
• Frozen krill
• Enriched brine shrimp
• Chopped marine shrimp
• Chopped squid
• Marine clam preparations
• High-quality frozen carnivore blends
• Appropriately sized marine pellets

Providing a variety of suitable marine foods helps accommodate the species' natural feeding behavior and nutritional requirements.

Important Shipping & Acclimation Notes

Live Animal Notice: The Bluejaw Triggerfish is a living marine animal. Individual specimens may naturally vary in coloration, markings, size, and behavior.

Shipping and handling can temporarily affect coloration, swimming activity, and appetite.

Newly arrived Bluejaw Triggerfish may initially seek shelter among rockwork while adjusting to unfamiliar surroundings.

Before introducing your fish, ensure your aquarium is established and maintains appropriate temperature, salinity, oxygen levels, and water quality.

Inspect the fish upon arrival and follow the acclimation instructions provided with your shipment.

Avoid sudden changes in water temperature or salinity and minimize unnecessary handling.

Provide secure hiding locations and a calm environment during the initial adjustment period.

Because triggerfish possess strong jaws and sharp dorsal spines, use appropriate precautions when handling or transferring specimens.

Monitor interactions with established aquarium inhabitants, particularly other territorial or similarly sized fish.

With its brilliant blue throat, striking yellow fin accents, and engaging personality, the Male Bluejaw Triggerfish is a magnificent addition to a spacious, well-maintained saltwater aquarium.