Scientific name: 
Kyphosus sectatrix/incisor
Distinctive features: 
Gray to silver. "Football-shaped" body. (Note: Reliably distinguishing between these two species visually while underwater is considered impossible.)
1-2 ft. max. 2 1/2 ft.

Initially appear uniformly gray to silver; occasionally display whitish blotches. A close look reveals thin yellow to bronze stripes on body and a stripe, bordered in white, under eye from mouth to gill cover.