Bigeye Trevally
Caranx sexfasciatus
Bigeye trevally is a fast, schooling jack of tropical Indo-Pacific waters, often hunting in coastal currents, reef drop-offs, and around islands. Juveniles may use protected bays and estuaries, while adults range offshore and can feed aggressively on baitfish and squid.
.jpg){kind=link}
Identification points
- Deep, oval trevally body with a steep head profile and very large eyes
- Adults show 6 to 7 dark vertical bars on the sides, especially when young or stressed
- Strongly forked yellowish tail and silvery-blue body with a darker back
Habitat
Tropical and subtropical Indo-Pacific coastal waters, including coral and rocky reefs, reef edges, lagoons, surf zones, and sometimes estuaries as juveniles. Adults commonly patrol channels, points, and drop-offs where current concentrates prey.
Bait notes
Use live or dead baitfish, squid strips, shrimp, and pilchards/sardines; small poppers, stickbaits, metal jigs, and soft plastics also work. Match bait size to local forage and fish when bait is being pushed by tide or dawn/dusk activity.
Behavior
A powerful visual predator that schools when young and often hunts in packs, especially around current lines and structure. It feeds on small fish, squid, and crustaceans, and can strike hard and make long runs once hooked.
Caution
Be careful handling this strong fish; the tail and gill covers can injure hands. In some regions large jacks may be associated with ciguatera risk, so local consumption advisories matter, and regulations may vary by area.
Fishing notes
Cast near reef edges, drop-offs, current seams, and bait schools, then work lures fast and erratically. Heavy enough tackle to turn fish away from structure is important; wire is usually unnecessary, but abrasion-resistant leader helps around reef and coral.