Description

Also known as Brown-backed Trevally, Trevally.

Found in calm, sheltered, coastal waters, of bays, estuaries, coral and rocky reefs.
They feed on crustaceans and small fish.
Length - 25cm
Depth - 0-30m
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/1911