Indian Mimic Surgeonfish (Acanthurus tristis)

Also known as Blackcheek Surgeonfish, Blackcheek Tang, Doctorfish, Eibli Mimic, Eibli Mimic Surgeonfish, Eibli Mimic Tang, Indian Mimic, Indian Mimic Surgeon, Indian Mimic Tang, Indian Ocean Mimic Surgeonfish, Indian Ocean Mimic Tang, Lancetfish, Mimic Surgeonfish, Mimic Tang, Thorntail, Thorntail Fish, Yellowspot Surgeonfish

Description

Also known as Blackcheek Surgeonfish, Blackcheek Tang, Doctorfish, Eibli Mimic, Eibli Mimic Surgeonfish, Eibli Mimic Tang, Indian Mimic, Indian Mimic Surgeon, Indian Mimic Tang, Indian Ocean Mimic Surgeonfish, Indian Ocean Mimic Tang, Lancetfish, Mimic Surgeonfish, Mimic Tang, Thorntail, Thorntail Fish, Yellowspot Surgeonfish.

Found singly, over mixed coral, rock, and sandy areas, of shallow lagoons and seaward reefs.
They feed on filamentous algae.
Juveniles mimic the cryptic Centropyge eibli.
Length - 25cm
Depth - 2-30m
Widespread Indian Ocean

Surgeonfish have a blade like spine in the tail that points outwards when bent, unicorns have two hook-like plates along the tail, these are used for defence and are as sharp as a surgeons scalpel, hence the name "Surgeonfish".
Some species are venomous. Ref: https://www.fishbase.se/summary/12782

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