Fin's Fish Guide
The Black-banded triggerfish (Rhinecanthus rectangulus) is a saltwater fish of the family Balistidae that grows up to 30 cm.
Description
The wedge-tail triggerfish is a handsomely marked triggerfish of the family Balistidae from the Indo-Pacific; in Hawaii it is famous as the 'humuhumunukunukuapua'a'. The species grows to about 30 cm and has a pale body with a conspicuous black, wedge-shaped band running obliquely from the eye to the belly region, and yellow and blue accents. It occurs on shallow outer reefs exposed to surge. As an omnivore it nibbles algae, small invertebrates, crustaceans and growth. Triggerfishes can lock the first dorsal spine upright to wedge themselves in crevices and can make grunting sounds. The species is harmless to humans.
Frequently asked questions
How do you recognise the Black-banded triggerfish?
The Black-banded triggerfish has a flattened, disc-shaped body, is mainly white and shows a vertical stripes pattern. Striking black wedge-shaped band; Hawaiian 'humuhumu', can lock the dorsal fin spine upright.
Where does the Black-banded triggerfish live?
The Black-banded triggerfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-Pacific; shallow outer reefs with surf.
How big does the Black-banded triggerfish get?
The Black-banded triggerfish grows to a maximum of about 30 cm.
Is the Black-banded triggerfish dangerous to humans?
No, the Black-banded triggerfish is harmless to humans. None required: this species is harmless to humans.
Is the Black-banded triggerfish edible?
The Black-banded triggerfish is rarely eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Rhinecanthus
More from the family Balistidae
Want the complete picture on the Black-banded triggerfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Black-banded triggerfish is one of 12,519 species in the app.