Wedgetail Triggerfish

Interesting Info

• The Wedgetail Triggerfish is a small but striking reef fish found across the Indo-Pacific, including northern Australia (Great Barrier Reef, Coral Sea, and reefs of WA).
• It’s best known from Hawaii, where it shares the same traditional name as the Hawaiian Triggerfish — humuhumunukunukuāpuaʻa. This long word means “triggerfish with a snout like a pig.”
• The name “Wedgetail” comes from its wedge-shaped tail, which helps set it apart from its close relatives.
• They grow up to about 30 cm (12 in) long, with an oval-shaped, flat body decorated in bold colours.
• Their pattern includes black stripes running across the body, a white belly, and patches of yellow, blue, and turquoise — making them look like a living piece of modern art.
• They are usually found in shallow lagoons, sandy reef flats, and seaward reef slopes, generally in waters less than 15 m (49 ft) deep.
• Wedgetail Triggerfish are omnivores, feeding on small crabs, shrimp, sea urchins, worms, and algae. Their strong teeth and jaws allow them to bite through tough shells with ease.
• Like all triggerfish, they have a trigger spine on their back. If threatened, they wedge themselves into crevices with the spine raised, making it very hard for predators to pull them out.
• Breeding happens in shallow sandy areas, where females lay eggs in nests. Males and females guard these nests fiercely until the eggs hatch.
• During nesting season, they can be very territorial and may even dart at divers, snorkellers, or other fish that get too close.
• Juveniles start life floating among plankton before settling into shallow reef areas, where their colours give them camouflage among corals and algae.
• They can live around 10 years in the wild, though like other reef fish, many don’t survive to maximum age due to predation or habitat pressures.