
Atlantic Blue Tang
Acanthurus coeruleus
Acanthurus fowleri

A solitary and wary species found in clear seaward reefs and drop-offs . Often grazes algae from surface of sponges .
Also known as: fowler's surgeonfish, fowler's surgeon, horse-shoe surgeon, fowlers surgeonfish, fowler's surgeonfish, black-spot surgeonfish, horse-shoe surgeon
Look for a large semicircular to subtriangular black mark anteriorly on side of body (open part anterior), the upper end at level of eye above dorsal end of gill opening, the lower end above base of pectoral fins. Head suffused with purplish blue. Caudal fin blackish centrally with a yellow band in each lobe that merges with white band at base, the posterior margin narrowly blue (Ref 9808).
A solitary and wary species found in clear seaward reefs and drop-offs .
A solitary and wary species found in clear seaward reefs and drop-offs .
Often grazes algae from surface of sponges .
Tangs are named for the sharp scalpel-like spine near the tail base.
Describe what you saw and we name it, then keep every species you find in your Oceandex.