Photo: Tim Pask
For reasons that remain mysterious, Giant Trevally attack and kill reef sharks much larger than themselves but don’t eat them. Fishers in Palau in the Western Caroline Islands, Saipan in the Mariana Islands, and the Marshall Islands have documented large trevally, singly or in pairs, repeatedly head-butting the sides of reef species such as Blacktip Sharks and even Tiger Sharks.
Trevally may ram more than sharks. A Hawaiian spearfisherman was rammed by a large Giant Trevally, suffering three broken ribs.
LINK (Via: JHU Press Blog)