Bluethroat Triggerfish - Xanthichthys auromarginatus
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The Bluethroat Triggerfish (Xanthichthys auromarginatus) is a striking and peaceful marine triggerfish, known for its bright blue throat and yellow-accented fins. Unlike many triggerfish species, it is relatively reef-safe and adds both color and dynamic movement to marine aquariums.
Common Name: Bluethroat Triggerfish
Scientific Name: Xanthichthys auromarginatus
Family: Balistidae
Size: Up to 8 inches (20 cm)
Temperament: Semi-Aggressive
Difficulty: Moderate
Reef Safe: With Caution
Native Region: Found throughout the Indo-Pacific, including the Philippines and Indonesia, inhabiting coral reef slopes and lagoons.
Tank Size: Minimum of 75 gallons
Temperature: 74–80°F (23–27°C)
pH: 8.0–8.4
Salinity: 1.023–1.025
Substrate: Open swimming areas with live rock for grazing and shelter; moderate water flow recommended.
• Diet: Omnivorous—feeds on a mix of meaty foods such as mysis, brine shrimp, and prepared marine diets.
• Behavior: Peaceful compared to other triggerfish, but may become territorial with similar-shaped tankmates.
• Compatibility: Ideal for community reef tanks with peaceful species; avoid very small or delicate fish.
• Reef Consideration: Generally reef safe, though caution is advised around small invertebrates.