Surgeon and Unicornfish; Acanthuridae

Surgeon and Unicorn-fish are algal grazing fish with sets of unique, scalpel-like spines. These sharp blades are situated on either side of the base of their tails. Another reason not to get too close to marine life on SCUBA dives!

The Unicornfishes – genus Naso – also have a protrusion of some variety on their forehead. Our best chance of sighting them is on diving trips to Anthong Marine Park and Koh Tao dive sites.

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