Giant trevally
Also called GT, Caranx ignobilis
A giant trevally (GT) is a large, powerful jack found on tropical reefs and flats. It is a top predator that eats baitfish and other marine life in very shallow water and along drop-offs.
- Group
- Flats species
- Category
- Species
- Level
- Beginner
- Water
- Saltwater
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What Giant trevally means
GT is the common name for giant trevally, a member of the jack family (Carangidae). Anglers target them around coral reefs, reef edges, channels, and shallow flats, often where current concentrates bait.
Most GT fishing is visual and fast. Shots are usually short and aggressive, then the fish tries to get back to coral or structure. Flies are typically baitfish patterns and surface flies, fished with hard strips and a solid strip set.
Why it matters on the water
GT are built to break gear and find structure. Tackle choices lean toward heavy tippet, strong knots, and a drag setting that can slow the first run without popping the connection.
They reward quick, clean execution. Good line management, a stripping basket in wind, and a plan for where to lead the fish after the eat do more for landing rate than changing patterns every cast.
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Read next
- Clouser MinnowA weighted baitfish streamer with lead or brass eyes that make it ride hook-point-up. It’s used in fresh or salt water to imitate small fish and move quickly through current.
- PopperA popper is a topwater fly with a cupped or flat face that pushes water and makes a “pop” or bloop when stripped.
- Strip setA strip set is a hook set made by pulling the fly line hard with the line hand while keeping the rod low, instead of lifting the rod tip.
- TippetTippet is the thin, level line tied to the end of your leader. It’s the section you cut back and replace as you change flies and re-tie knots.