Fin's Fish Guide
The Mustard surgeonfish (Acanthurus guttatus) is a saltwater fish of the family Acanthuridae that grows up to 26 cm.
Description
The whitespotted surgeonfish is a surgeonfish (Acanthuridae) from the Indo-West Pacific. The species reaches about 26 cm and has a dark, deep body with two white cross-bars and numerous white spots on the rear half of the body. It lives in the turbulent surge zone of clear seaward reefs and forms schools over reef flats exposed to surge and currents. It grazes filamentous and calcareous algae from the reef. On each side of the tail base it bears a sharp, scalpel-like spine with which it defends itself and that can cause cuts when handled carelessly.
Frequently asked questions
How do you recognise the Mustard surgeonfish?
The Mustard surgeonfish has a flattened, disc-shaped body, is mainly brown and shows a spots pattern. Sharp, scalpel-shaped spine on either side of the caudal peduncle; lives in the surf zone.
Where does the Mustard surgeonfish live?
The Mustard surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Indo-West Pacific, in the surge zone of seaward reefs.
How big does the Mustard surgeonfish get?
The Mustard surgeonfish grows to a maximum of about 26 cm. On average the species is around 18 cm.
Is the Mustard surgeonfish dangerous to humans?
The Mustard surgeonfish can cause injury; handle it with care. The sharp, scalpel-like spine(s) on each side of the tail base can cause deep cuts when handled. Do not grasp the fish by the tail and handle it carefully; clean and disinfect a wound and seek medical help for a deep cut.
Is the Mustard surgeonfish edible?
Yes, the Mustard surgeonfish is commonly eaten.
More photos
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All data
Identification
Appearance
Habitat & distribution
Behaviour & biology
For anglers
Safety
Status & sources
Same genus Acanthurus
More from the family Acanthuridae
Want the complete picture on the Mustard surgeonfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Mustard surgeonfish is one of 12,519 species in the app.