Fin's Fish Guide
The Black doctorfish (Acanthurus chirurgus) is a saltwater fish of the family Acanthuridae that grows up to 39 cm.
Description
The doctorfish (Acanthurus chirurgus) is a surgeonfish of the family Acanthuridae from the Atlantic. The species has a deep, laterally compressed, brownish body with about ten narrow, dark vertical bands and reaches about 39 cm. It inhabits shallow reefs and rocky areas and occurs in loose aggregations. As a mainly diurnal algae-eater it grazes algae and ingests sand in the process. On each side of the caudal peduncle the species bears a sharp, scalpel-like spine, from which the group takes its name; with it the fish can cause painful cuts if handled carelessly. The larvae are planktonic.
Frequently asked questions
How do you recognise the Black doctorfish?
The Black doctorfish has a flattened, disc-shaped body, is mainly brown and shows a vertical stripes pattern. Scalpel-like spine on the caudal peduncle; narrow dark bands on a brown body. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.
Where does the Black doctorfish live?
The Black doctorfish lives in the sea (marine waters) and is mostly found around stony or rocky ground. Shallow reefs and rocky shores of the Atlantic Ocean.
How big does the Black doctorfish get?
The Black doctorfish grows to a maximum of about 39 cm. On average the species is around 35 cm.
Is the Black doctorfish dangerous to humans?
The Black doctorfish can cause injury; handle it with care. The sharp spine on each side of the caudal peduncle can cause deep cuts; do not grab the fish by the tail. Clean and disinfect the wound thoroughly and seek medical help for a deep cut or signs of infection.
Is the Black doctorfish edible?
The Black doctorfish is rarely 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 Black doctorfish?
Point your camera at the fish and Fin names the species in seconds. Free, and the Black doctorfish is one of 12,519 species in the app.