Saltwater Fish
Xanthichthys auromarginatus
Xanthichthys auromarginatus
(Blue Throat Triggerfish)

Species Description…

Scientific Name: Xanthichthys auromarginatus
Common Name: Blue Throat Triggerfish
Species Group: Triggerfish
Habitat: Reef Safe with Caution
Care Level: Intermediate
Temperament: Semi-aggressive
Diet Type: Carnivore
Role in Aquarium: Showpiece Fish
Max Fish Length: 10 (inches)
Min Aquarium Size: 180 (gallons)
Native Range: Indo-Pacific
Xanthichthys Auromarginatus - The Blue Throat Triggerfish

Xanthichthys Auromarginatus (The Blue Throat Triggerfish)

Overview

  • Native to the Indo-Pacific region, predominantly found around coral reef slopes, seaward reefs, and drop-offs.
  • Distinguished by its vivid blue jaw and throat, contrasting with a soft grayish body and yellow-tipped fins.
  • An active and moderately aggressive species, often considered one of the more reef-compatible triggerfish species.
  • Well known for its intelligence, engaging behavior, and unique swimming style.
  • Best suited for aquariums providing ample swimming space, strong water flow, and structured rock formations.

Feeding

  • Carnivorous, predominantly feeding on zooplankton, crustaceans, mollusks, and small fish in the wild.
  • Thrives on a diet of varied marine-based foods such as frozen krill, mysis shrimp, chopped seafood, and high-quality marine pellets.
  • Benefits greatly from occasional feedings of live food to encourage natural predatory behavior and stimulate activity.
  • Should be fed multiple times a day, as it is an energetic species with a high metabolic rate.
  • A well-balanced diet supports vibrant coloration, robust health, and longevity.

Habitat

  • Typically inhabits reef slopes and deeper coral reef areas with strong currents.
  • Commonly observed swimming in open water or around rocky outcroppings and coral formations.
  • Aquarium setups should include plenty of open swimming space as well as secure hiding spots provided by rock structures.
  • Requires excellent water quality, strong filtration, and stable environmental conditions for optimal health.
  • Providing ample space and strong water movement encourages natural swimming behavior and activity levels.

Fish Care

  • Optimal water temperature: 74-80°F (23-27°C) to maintain proper metabolic rates.
  • Preferred pH range: 8.1-8.4, with a salinity level of 1.020-1.025.
  • Requires regular water changes and efficient filtration to manage waste production due to its active feeding habits.
  • Generally reef-compatible, though it may occasionally nip at smaller invertebrates and certain corals.
  • Providing varied foods and sufficient swimming space helps ensure a stress-free environment.

Compatibility

  • Moderately aggressive and best housed with other semi-aggressive or similarly-sized species.
  • Compatible with large angelfish, tangs, large wrasses, and other robust reef fish.
  • Should not be housed with smaller or timid fish that may be intimidated or seen as prey.
  • Best suited for a community aquarium with larger, assertive tankmates.
  • Providing adequate space and hiding spots helps reduce territorial behavior and aggression.

Aquarium Behavior

  • An active and engaging fish known for its inquisitive nature and intelligent behaviors.
  • Frequently seen swimming openly, interacting with its environment, and occasionally rearranging substrate and decorations.
  • Often curious about its surroundings and may closely observe human activity outside the aquarium.
  • Providing environmental enrichment, such as varied tank layouts and feeding methods, encourages natural behaviors.
  • Over time, it can develop recognition of its caretaker and actively respond during feeding times.