White or yellow spine on base of tail. Dorsal and anal fins edged in bright blue. More circular than other surgeonfishes. Uniform color with no body bars. Can change from bluish gray to dark brown, and pale or darken dramatically.
Markings radiate from eye.
Blue or white edging on dorsal, anal and tail fins. May have pale band on base of tail. Can change from bluish gray to dark brown, and pale or darken dramatically. Several markings radiate from eye. Blue or white edging on dorsal, anal and tail fins.