Description English: Possibly a mating congregation of jacks - males darker Jacks are a high-level inshore predator built for speed. Identified by user as Uraspis helvola Date April 1968
Source http://www.photolib.noaa.gov/htmls/reef0047.htm Author Dr. James P. McVey, NOAA Sea Grant Program
Source: https://commons.wikimedia.org/wiki/File:Uraspis_helvola.jpg