The Pacú season is in full swing, and this year’s fishing has already delivered some unforgettable moments. Known as the Permit of Freshwater, this elusive and highly coveted species challenges even the most experienced anglers. With its unique feeding habits, powerful fights, and unpredictable nature, catching a Pacú on the fly is an achievement few can claim.

From December to April, the Upper Paraná River offers the best opportunity to land this prized fish, making it a crucial piece of the Golden Fly Fishing Grand Slam. But targeting Pacú requires skill, patience, and an understanding of their natural environment and feeding behaviors.

Pacú fishing isn’t just about landing a big fish; it’s about the experience, the technique, and the strategy required to fool this wary species. Unlike aggressive predators such as the Golden Dorado, Pacú are omnivores, often found feeding on fruits, flowers, and insects that fall from overhanging trees. This makes them one of the most unique targets in freshwater fly fishing.

The magic of Pacú fishing lies in the subtlety of the presentation. Unlike the aggressive strikes of Dorados, Pacú take their time when feeding, often sipping food from the surface in the most delicate way. Seeing a big Pacú slowly rising under a tree, carefully taking in fruit, is enough to make any angler’s hands shake with excitement.

After a couple of years of low water levels, which made targeting Pacú challenging due to reduced populations and smaller fish sizes, the Upper Paraná River has finally bounced back—and in a big way. This season, the river is teeming with Pacú, delivering some of the best fishing we’ve seen in years. We anticipated that 2024 would be a record-breaking season for this species, and it has not disappointed.

Recent catches have included big, healthy Pacú, many surpassing double-digit weights, with some true monsters exceeding 20 pounds. The increased water levels have rejuvenated the ecosystem, allowing more fruit-bearing trees to flourish along the banks—providing an abundant natural food source that has kept Pacú aggressively feeding. If there was ever a time to chase this incredible species, this is it!

Now, let’s dive into what makes Pacú fishing so unique and how you can take on the challenge.

One of the most exciting aspects of Pacú fishing is the shift in technique and gear. Instead of the heavy #8 rods used for Dorados, anglers switch to a lighter #6-weight rod, making the fight even more thrilling.

Best Techniques for Pacú Fishing:

✅ Sight Fishing: Look for them under fruiting trees, where they wait for falling food.

✅ Mimic Falling Fruit: The key to enticing Pacú is replicating the natural sound of fruit hitting the water. Our guides will teach you how to make the perfect cast and let the fly dead-drift, triggering aggressive strikes.

✅ Slow & Precise Strips: Pacú take their time feeding, so a subtle retrieve or non is key. Pacú prefer feeding near structure. Landing the fly under overhanging branches and allowing it to drift naturally increases your chances.

✅ Stealthy Approach: They are cautious eaters, so a gentle cast and quiet landing is crucial.

The Fight: A Battle of Strength & Strategy

The moment you hook a Pacú, the real challenge begins. Unlike Dorados, which explode in fast runs, Pacú fight like bulls, using brute force to dive towards submerged logs and tree roots. If you’re not quick, they’ll break you off before you even get the chance to fight back.

🔥 Quick Reflexes – Turn their head before they reach cover.
🔥 Strong Leader Setup – Their powerful jaws demand reinforced tippet strength.
🔥 Steady Pressure – Keep them away from structure without snapping your line.

🎣 Gear & Setup for Pacú Fishing:

✅ Rod: 6wt or 7wt rods provide the perfect balance of finesse and power.
✅ Line: Warm water floating lines allow precise presentation.
✅ Leader: 30-pound wire tippets to prevent Pacú from cutting the line.
✅ Flies: Large fruit and insect imitations, tied with foam, plastic beads, or silicone for realistic buoyancy.

The Upper Paraná River is a vast and complex system of side channels, winding streams, and a powerful main river. The banks and islands are covered in dense subtropical jungle, where trees and plants overhang the water, dropping fruits, nuts, and insects—a feast for omnivorous species like Pacú, Pirá Pitá, and Boga.

Among the most important food sources for Pacú are:
🌿 Inga – Produces large yellow beans.
🌳 Laurel del Río – A fruit similar in shape and size to an olive.
🍊 Tala – Small round orange fruits.
🍇 Francisco Álvarez – Tiny red/purple fruits Pacú love.

Like trout anglers use terrestrials and mouse patterns, we fish oversized dry flies and fruit imitations to mimic the natural food Pacú are waiting for. Unlike trout flies, however, these patterns are tied on strong saltwater hooks designed to withstand the crushing power of Pacú’s human-like molars—teeth capable of breaking monofilament, fluorocarbon, and even bending inferior hooks.

🌞 Best season for Pacú fishing runs from December to April, but February and March are the prime months for Pacú fishing. These are the hottest months of the season, when the largest variety of fruit and nuts are dropping into the water, keeping Pacú actively feeding near the surface.

🌧️ After rain showers, omnivorous fish become extremely active, gathering under trees to feed on whatever the rain has knocked loose. The same happens when monkeys and birds are feeding in the trees, creating a frenzy below as fish wait for food to fall into the water.

The challenge of catching a Pacú isn’t just about landing the fish—it’s about mastering a unique, technical style of fly fishing that demands precision, strategy, and finesse. The Upper Paraná River provides the perfect setting for this one-of-a-kind experience, where anglers trade #8-weight setups for #6-weight finesse, casting under jungle canopies and battling one of the strongest freshwater fish on the planet.

This season is at its peak, and the catches have been nothing short of spectacular. If you’re ready to test your skills, experience the thrill, and complete your Grand Slam, book your adventure with Golden Fly Fishing today! 🎣🔥

Whether drawn to the strategic challenge of spring, or the abundance of summer, timing your fishing trip to align with these seasonal insights is key. At Golden Fly Fishing, we specialize in adapting to these seasonal shifts, providing customized strategies that significantly boost your prospects of landing Golden Dorados, Pacú, Pirá Pyta and other species.
Dive into our guide, crafted by our head guide, full of tips and secrets to master golden dorado fishing across all seasons in the High Paraná River.

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