Description

Also known as Bleekers Jackfish, Bludger, Naked-breast Trevally, Scad, Trevally.

Found singly or in small schools close to coral and rocks over deep off-shore reefs.
They feed on crustaceans and small fish.
Juveniles form schools.
Length - 90cm
Depth - 0-100m
Widespread Indo-West Pacific

Jacks are fast swimming fish that can roam over great distances. The larger fish hunt other fish and the smaller fish eat zooplankton. In turn they are hunted by large Tuna and Dolphins. Ref: https://www.fishbase.se/summary/Carangoides-gymnostethus.html