Mimic Surgeonfish

Acanthurus pyroferus

Mimic Surgeonfish is a tropical reef surgeonfish that often resembles angelfish in juvenile color patterns. Adults are more plainly colored and graze on benthic algae across Indo-Pacific reefs.

Saltwater

Mimic Surgeonfish reference image — Rickard Zerpe, cc-by, via Wikimedia Commons. Source: Wikimedia Commons.

Identification points

Adult has an oval surgeonfish body with a bluish-gray to brownish head and body.
Tail base bears a razor-sharp scalpel spine typical of surgeonfishes.
Juveniles are darker and often show a black body with a contrasting orange or yellow tail patch, mimicking dwarf angelfish.

Habitat

Coral and rocky reefs, lagoon slopes, and outer reef flats; juveniles often shelter among branching corals, especially in shallow clear water.

Bait notes

Not a targeted game fish and rarely taken by anglers. If hooked incidentally, small algae- or plant-based baits and tiny reef jig presentations are more relevant than meat baits.

Behavior

Primarily a daytime algal grazer that forages on turf algae and detritus. Juveniles mimic local angelfish species for protection, while adults are more solitary or found in small groups.

Caution

Has a sharp scalp-like spine at the tail base that can cut; avoid hand-lining. Reef-fish consumption can carry ciguatera risk in some areas, so check local advisories.

Fishing notes

Best approached on light tackle around shallow reefs with minimal disturbance; many are aquarium-interest fish rather than sport targets. Handle carefully and release quickly if caught.