 Its very slender tail and fine dentition suggest an exclusive diet of small, pelagic prey.Analysis of stomach contents reveals that pelagic threshers feed mainly on barracudinas, lightfishes, and escolars, all inhabitants of the mesopelagic zone.Therefore, little competition occurs between the pelagic thresher and other large oceanic piscivores such as billfishes, tunas, and dolphinfishes, which tend to feed near the surface.