Reef fish

Reef triggerfish

Rhinecanthus rectangulus

Shallow reef flats, rubble, and wave-exposed reef edges

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Photo: Qyd · CC BY 2.5 · Source and license. Displayed as a resized crop. Photograph illustrates the species.

Habitat: Shallow reef flats, rubble, and wave-exposed reef edges
Typical viewing depth: 1–15 m
Viewing activities: Snorkeling · Scuba diving

Field context

Reef habitats; the Hawaii Reefs field guide lists 3–30 ft (roughly 1–9 m).

Observing responsibly

Known in Hawaiʻi as humuhumunukunukuāpuaʻa. Keep space around nesting fish.

When to look

The available records do not establish a reliable local viewing season. Use the map’s month filter to inspect dated observations; it does not predict an encounter.

WHERE HAS IT BEEN RECORDED?

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These dated records show past presence. They do not establish today’s abundance, guarantee a sighting, or describe the species’ entire range.

This reference profile does not have a matching record in the four featured snapshots. That is not evidence of absence. Explore the live map for other areas and records.