Quick Facts
Distribution
Interesting Info
- The Pinktail Triggerfish are found throughout the Indo-Pacific, including the Great Barrier Reef, Coral Sea, and reefs of northern Western Australia.
- It gets its name from its eye-catching pink tail, which contrasts sharply against its dark, almost black body.
- Their body is oval-shaped and deep, built for power and manoeuvrability among coral reefs.
- They have small, bright blue-green lines running across their face and fins, which shine in sunlight, especially when viewed underwater.
- Like all triggerfish, they have a unique locking spine on their dorsal fin that can be “triggered” upright to wedge themselves into reef crevices for protection.
- Pinktail Triggerfish are omnivores, feeding on a wide range of prey: algae, sponges, sea urchins, crabs, molluscs, and even floating plankton. Their strong teeth can crush hard shells with ease.
- Their habitat includes outer reef slopes, lagoons, and seaward reefs, usually at depths of 5–50 m (16–164 ft).
- They are active daytime foragers, often swimming above the reef in small groups but darting back to cover if threatened.
- While not aggressive toward people, males can become territorial when guarding nests, occasionally charging intruders to drive them away.
- Breeding occurs in warmer months. Males establish and defend nesting territories on the reef floor, where females lay eggs that are aggressively guarded until hatching.
- Lifespan is thought to be 8–10 years, similar to related triggerfish.
Species Interaction
Snorkelling & Diving, Aquariums, Recreational Fishing
The Pinktail Triggerfish is most often encountered by snorkellers and divers, who see them hovering above corals on tropical reefs. They are sometimes kept in large saltwater aquariums, though they require plenty of space and a mixed diet. Across parts of the Pacific, they are caught in small-scale, but in Australia they are not a targeted species and often caught as bycatch.
Scientific Classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Tetraodontiformes
Family: Balistidae
Genus: Melichthys
Species: Melichthys vidua
Conservation Status
The Pinktail Triggerfish is listed as Least Concern by the IUCN, thanks to its wide distribution and stable populations. Localised threats include overfishing for aquarium trade, subsistence harvest, and coral reef degradation, but overall the species is not at risk.
Fish Taste Quality
Pinktail Triggerfish are not eaten in Australia, and not recommended because of the risk of ciguatera poisoning. They are eaten in some Pacific regions but not a major food fish.
Taste Rating: 2/5
How to catch
Pinktail Triggerfish
Catch Difficulty: Easy
Tackle: Patternoster Rig, Running Sinker Rig
Bait: Crab, Fresh cut flesh baits, Octopus, Prawns, Shellfish, Squid, Worms
Technique: Keep bait close to the reef/structure
Popularity: Not targeted - Bycatch
Pinktail Triggerfish
As Aquarium Fish
Care Level: Moderate
Temperament: Peaceful
Diet: Omnivore
Reef Compatible: With caution
Minimum Tank Size: 150 gallons
Recreational Viewing
- Snorkeling & Scuba
Finding: Easy
Temperament: Peaceful
Location: Inner Reef, Outer Reef, Lagoon
Danger: None