Powderblue Surgeonfish (Acanthurus leucosternon)

Also known as Blue Surgeonfish, Doctorfish, Lancetfish, Powderblue Doctorfish, Powderblue Surgeon, Powderblue Tang, Thorntail, Thorntail Fish

Description

Also known as Blue Surgeonfish, Doctorfish, Lancetfish, Powderblue Doctorfish, Powderblue Surgeon, Powderblue Tang, Thorntail, Thorntail Fish.

Found in small to large schools over reef flats and upper seaward slopes of clear coastal and island coral reefs.
They feed on benthic algae.
Length - 38cm
Depth - 0-25m
Widespread Indian Ocean, Western Pacific

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/1257

2 comments

  1. Only form their blade like spine on the tail, but I have never heard of anyone being hurt, maybe fishermen when caught. As divers we get really close.

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