Fin's Fish Guide
The Ocean surgeonfish (Acanthurus bahianus) is a saltwater fish of the family Acanthuridae that grows up to 13 cm.
Western Atlantic and the Caribbean, near coral and rocky reefs of shallow coastal water.
Description
The ocean surgeonfish is an oval, laterally compressed surgeonfish of the family Acanthuridae reaching about 38 cm. The brown to blue-grey body can change colour and tone quickly. Characteristic of the family is the sharp, scalpel-like bony blade on each side of the tail base - hence the name surgeonfish - which can be flicked out in defence and cause deep cuts. The species lives near coral and rock reefs of shallow coastal water in the western Atlantic and the Caribbean. It grazes algae and growth off the rocks with its small mouth, often in loose groups. Through its grazing it helps keep the reef free of smothering algae.
Frequently asked questions
How do you recognise the Ocean surgeonfish?
The Ocean surgeonfish has a flattened, disc-shaped body, is mainly brown and shows a plain pattern. Oval surgeonfish with a sharp, scalpel-like bony blade on either side of the caudal peduncle; can change quickly from brown to blue-grey. Caution: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with care or avoid in risk areas.
Where does the Ocean surgeonfish live?
The Ocean surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Western Atlantic and the Caribbean, near coral and rocky reefs of shallow coastal water.
How big does the Ocean surgeonfish get?
The Ocean surgeonfish grows to a maximum of about 13 cm.
Is the Ocean surgeonfish dangerous to humans?
The Ocean surgeonfish can cause injury; handle it with care. A sharp, scalpel-like blade on each side of the tail base can cause deep cuts; handle a caught fish carefully and clean any cut.
Is the Ocean surgeonfish edible?
Yes, the Ocean surgeonfish is commonly eaten.
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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 Ocean surgeonfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Ocean surgeonfish is one of 12,519 species in the app.