On board a boat, a man throws a tuna at big-headed jacks. The fish rushed to the prey before it even touched the water waving the sea in an impressive way. Food Frenzy (jacks) ate the tuna in a matter of seconds. The trevally or Caranx ignobilis is a large fish size of up to 1, 70 m (on average). It is a predator that has a jaw with teeth (canine tops and row of tapered teeth down)