Fin's Fish Guide
The Black surgeonfish (Acanthurus gahhm) is a saltwater fish of the family Acanthuridae that grows up to 40 cm.
Description
The black surgeonfish is a surgeonfish (Acanthuridae) from the Red Sea and the western Indian Ocean. The species is almost uniformly dark-brown to black, with a paler band around the eyes. It often forms large groups in open areas near coral or rock. It grazes algae and detritus from the bottom. On each side of the tail base it carries a sharp, scalpel-like spine that can inflict deep cuts.
Frequently asked questions
How do you recognise the Black surgeonfish?
The Black surgeonfish has a flattened, disc-shaped body, is mainly black and shows a plain pattern. Almost uniformly dark with a pale eye band; algae-eating surgeonfish with a scalpel-like caudal spine.
Where does the Black surgeonfish live?
The Black surgeonfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Red Sea and western Indian Ocean; near coral and rock.
How big does the Black surgeonfish get?
The Black surgeonfish grows to a maximum of about 40 cm.
Is the Black surgeonfish dangerous to humans?
No, the Black surgeonfish is harmless to humans. Not venomous, but the sharp, scalpel-like spine on the tail base can inflict deep cuts. Handle with care; clean the wound thoroughly and seek medical care for deep wounds or infection.
Is the Black surgeonfish edible?
Yes, the Black 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 Black surgeonfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Black surgeonfish is one of 12,519 species in the app.