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Giant Trevally flies: The best flies for Targeting GT’s


Giant Trevally, or GT, are one of the most revered and powerful game fish that roam the tropical waters of the world. Known for their aggressive nature and bone-jarring strikes, GT’s offer a thrilling challenge for fly anglers seeking an adrenaline-fueled fishing experience.

To increase your chances of success, it’s crucial to have the right fly patterns in your arsenal. In this article, we’ll explore some of the best Giant Trevally flies and discuss the characteristics that make them irresistible to these formidable predators.

The Classic Popper

When it comes to enticing a Giant Trevally to strike, few fly patterns can match the effectiveness of a well-designed popper. Popper flies create commotion and surface disturbance, mimicking wounded baitfish or prey struggling on the water’s surface.

These gangsters of the flats as they are fondly known, are known for their explosive top water strikes, and poppers capitalize on this behaviour. Choose large, durable poppers with a cupped face that can create a significant splash and noise when retrieved aggressively.

Look for patterns that imitate the prevalent baitfish in your target area, such as Mullet or Sardines.

giant trevally Streamer Flies

Streamer flies are versatile patterns that imitate various prey species, making them highly effective for GT fishing. These Giant Trevally flies mimic wounded or fleeing baitfish, which trigger predatory instincts in GT’s.

Opt for large, durable streamers tied with synthetic materials such as EP Fibres, Flashabou, or synthetic bucktail, which provide lifelike movement in the water. Choose patterns with contrasting colours, such as black and purple, chartreuse and white, or blue and white, to increase visibility and attract attention in different light conditions.

Deceiver Patterns

Deceiver flies are classic saltwater patterns that have proven their effectiveness in targeting a wide range of species, including Giant Trevally. These flies imitate baitfish with their slender profile, flowing movement, and realistic appearance. Tie deceivers in larger sizes to match the size of the baitfish GT’s are known to feed on.

Choose patterns with vibrant colours, such as blue, silver, or olive, to mimic the local baitfish species. Deceivers work well when retrieved with long, steady strips, imitating swimming or fleeing baitfish.

Crab and Shrimp Patterns

Giant Trevally are opportunistic predators and will readily feed on crustaceans such as crabs and shrimp. Fly patterns that imitate these prey species can be highly effective in enticing GT’s to strike. Crab and shrimp patterns should be tied with lifelike materials, such as synthetic fibres or natural materials like EP Fibres and craft fur.

Incorporate weighted eyes or bead-chain eyes to ensure the fly sinks quickly to the desired depth. Colours such as tan, olive, or brown are effective for imitating crustaceans. Retrieve these flies with short, erratic strips to imitate the natural movement of a crab or shrimp.

Hybrid giant trevally Flies

GT fishing often requires versatility and adaptability, as conditions and prey species can vary. Hybrid flies combine elements of multiple fly patterns to create innovative designs that can trigger aggressive responses from GT’s.

These Giant Trevally flies may incorporate popper faces with streamer bodies or combine the characteristics of crab and baitfish patterns. Hybrid flies allow you to experiment with different presentations and imitate multiple prey species, increasing your chances of success.


Targeting Giant Trevally with a fly rod is an exhilarating pursuit that requires the right fly patterns to unlock the power of these formidable predators. Whether you choose poppers, streamers, deceivers, crab and shrimp imitations, or hybrid patterns, the key is to match the prevalent baitfish or prey species and trigger the predatory instincts of GT’s. Experiment with different retrieves, speeds, and depths to find what works best in your specific fishing location. Remember, Giant Trevally fishing requires patience, persistence, and a willingness to embrace the explosive strikes and blistering runs that make these fish the ultimate saltwater gamefish.

Contact us

If you would like to discuss a trip to any of the destinations for GTs we offer, you can contact our Saltwater fly fishing team leader, Peter Collingsworth, directly by emailing him at or by calling him directly at 01603 407596. Alternatively, you can submit an enquiry through our website here.

If you would like to take a closer look at the video content we have produced throughout the years chasing GT’s on the fly, you can find our youtube playlist here.

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