Bursa Triggerfish

The Bursa Triggerfish is a deep-bodied, laterally compressed species that carries a tan, pale grey, or brown body above and clean white below. A white diagonal line runs back from the mouth, and two curved, scythe-like yellow-to-brown bands sweep around the rear of the eye and across the pectoral-fin region. Those bands are not static: they darken or fade with age, mood, and time of day, so the same fish can look noticeably different from morning to evening. The species occupies tropical Indo-Pacific reefs, ranging from East Africa through northern Australia to Japan, Hawaii, and the central Pacific islands, and reaches roughly 10 inches at maturity.

Adult housing begins at 100 gallons in an established system, with a strong emphasis on open water for cruising and substantial, well-braced rockwork containing caves and crevices for retreat and nighttime sleeping. Include a sand bed seeded with rubble and seashells. This trigger habitually flips substrate and loose objects while hunting, and the hard material gives it something to work its teeth against. Plan on rearranged rock and a churned sand bed as normal behavior rather than a problem to solve, and secure any structures you do not want toppled.

On the reef, Sufflamen bursa patrols the bottom for crabs, bivalves, gastropods, echinoderms, tunicates, worms, and eggs, along with other small animals it can crush or pick apart. Algae and detritus turn up in gut contents as well, but stomach-content research characterizes the species as essentially carnivorous, and captive feeding should reflect that.

Offer a rotation of meaty items: chopped marine fish, shrimp, squid, clam flesh, and prepared frozen carnivore foods. Hard-shelled offerings are valuable because they wear down the powerful teeth that continue to grow, and a portion of Spirulina-containing food may be worked into the rotation. Two or three feedings per day suit the active metabolism of this fish and help keep aggression from building around mealtimes.

Chopped Marine Fish Shrimp Squid Clam Flesh Frozen Carnivore Preparations Hard-Shelled Foods Spirulina-Enriched Foods
This is a territorial, aggressive triggerfish that lives primarily on its own, though pairs and the occasional trio are recorded in the wild. It stays active through the day around rock and coral structure and tucks under reef cover to rest at night. Keep one specimen per system, or a confirmed pair, and introduce it after the other fish are settled so it does not claim the entire tank as its own before tankmates arrive.

Tankmates should be robust fish of equal or greater size that can hold their own. Smaller fish are likely to be harassed or eaten, and slow-moving species such as lionfish tend to have their fins nipped. The Bursa Triggerfish is not reef safe: it overturns corals and benthic organisms while foraging, and shrimp, crabs, snails, clams, sea stars, urchins, worms, and tunicates all qualify as food. A fish-only system with durable rockwork is the appropriate home, not a coral display supported by a cleanup crew.

FAQ

Frequently Asked Questions

About the Bursa Triggerfish

  • How large an aquarium does a Bursa Triggerfish need?
    Provide an established aquarium of at least 100 gallons with open swimming room, secure rockwork with caves, and a sand-and-rubble area. Adults reach about 10 inches.
  • Can it be kept in a reef aquarium?
    No. It is unsafe with corals and invertebrates, and it may overturn corals or consume shrimp, crabs, snails, clams, sea stars, and urchins.
  • What should it be fed in captivity?
    Feed a varied carnivorous diet of chopped marine fish, shrimp, squid, clam flesh, and frozen meaty preparations, including hard-shelled items for tooth wear. Two or three feedings per day are recommended.