Also known as
- Bigeye Jack US
- Great Trevally US
- Six-Banded Trevally US
- Dusky Jack US
- Six-Banded Jack US
Identification
A robust streamlined Indo-Pacific schooling jack built for both sustained cruising and burst-speed ambush — distinctive day-school / night-hunt life history.
- Small dark spot on the gill cover
- Juveniles show 5-6 dark vertical bands that fade in adults
- Dark second dorsal fin with a distinctive white tip on the lobe
- Yellow to black anal fin and tail in adults
- Unusually large eyes — a primary identifying feature and the namesake
Where it holds
- Inshore
- Coral Reefs
- Estuaries
- Mangroves
Behaviour
An Indo-Pacific schooling predator with a distinctive day-school / night-hunt life history — works the upper 70m around reef edges, jetties, pinnacles, isolated reefs, and channel mouths. Forms large stationary mid-water schools by day around structure (a famous dive spectacle), then disperses to hunt baitfish and crustaceans solo near the reef after dark. Oversized eyes are adapted for low-light ambush. Most active in 22-29°C (72-84°F) water.
Diet: Small Baitfish, Anchovies, Herring, Shrimp, Crabs, Squid
How it's caught
Line Fishing
Jigging
The dominant Indo-Pacific charter approach for daytime schools — drop a 100-200g metal jig or speed jig (silver, blue, pink) into stationary mid-water schools circling jetties, pinnacles, and isolated reefs in 10-100m and work it with rapid aggressive sweeps. Equally productive at night when fish move closer to reef structure to feed. PE3-5 jigging tackle, 60-80lb fluorocarbon leader.
Live Lining
The signature night-fishing approach — drift a live herring, anchovy, mullet, or small reef fish on a 4/0-6/0 circle hook with 50-80lb fluorocarbon leader near reef structure and drop-offs after dark when fish disperse to hunt. Cut fish, squid, and strip baits work equally well. Tide-change current pulses concentrate the bite.
Trolling
An effective method for locating schools across reef systems — pull skirted lures, spoons, and feathers at 3-5 knots along outer reef edges and over structure where day schools congregate. Once a school is found, switch to jigging or live-lining for follow-up hookups. PE4-5 trolling tackle, 50-70lb fluorocarbon leader.
Spinning
A productive low-light approach — cast 80-150mm poppers, stickbaits, or soft-plastic shads to feeding fish at first light, last light, and after dark around reef edges, jetties, and pinnacles. Fast erratic retrieves trigger ambush strikes from oversized-eye low-light hunters. PE2-3 spinning rod, 50-70lb fluorocarbon shock leader.
Surf Casting
An accessible Indo-Pacific shore approach — long-cast 80-150mm poppers, stickbaits, or 60-100g metal slugs from jetties, rocky points, and beaches with deep-water access at night when fish move shoreward to hunt. New-moon and tide-change windows produce best. 9-10ft popping rod, PE3-4 mainline, 50-80lb fluorocarbon shock leader.
Fly Fishing
Saltwater Fly
A productive low-light approach — cast a 3-5 inch baitfish streamer (Deceiver, EP Baitfish, Crease Fly) to cruising fish at dawn, dusk, and on tide-change pulses around reef edges and tidal channels and strip fast and erratically. 10wt rod, intermediate WF saltwater line, 30-40lb fluorocarbon shock tippet.
Spear Fishing
Inshore Spearfishing
A spectacular Indo-Pacific approach where stationary daytime schools circle jetties, pinnacles, and isolated reefs in 10-50m — approach the school slowly from below or alongside and select a peripheral fish for the shot. Aim for the head or spine. Schools tolerate divers well but tighten up if approached aggressively. 110cm gun with double bands and 8.0mm shaft.
