Description
Stonefly Nymphs – The Year-Round Secret
Why Stonefly Nymphs are a must-have:
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Protein Power: These nutrient-rich nymphs are a primary food source for trout and grayling all year long.
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Easy Targets: As poor swimmers, they often lose their grip and drift downstream, becoming an effortless "snack" for waiting fish.
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Bottom Dwellers: Unlike many insects, they don't swim to the surface to hatch; they crawl to the shore. This keeps them in the "strike zone" near the riverbed for their entire life cycle.
J:son Tungsten Stonefly Nymph 1 Black – Barbless (#2)
The Heavyweight Shadow – Dinocras and Pteronarcys Specialist The J:son Tungsten Stonefly Nymph 1 Black Barbless in size #2 is a massive 32 mm imitation, featuring a high-density tungsten core and a premium barbless hook. This is the ultimate "big-river" fly, designed to reach the deepest, fastest currents where the largest trout and grayling wait for high-calorie prey.
Why this fly works:
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Ethical Powerhouse: The barbless hook is specifically chosen for technical, catch-and-release waters. It provides effortless penetration on the strike while ensuring a quick and safe release for trophy-sized fish.
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Maximum Sinking Speed: With its integrated tungsten weight, this 32 mm nymph is built to "anchor" your rig. It plummets through turbulent surface water to reach the riverbed where giant stoneflies live among the crevices.
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Unmatched Silhouette: Black is the most versatile color in fly fishing. It provides a sharp, high-contrast silhouette that fish can easily see from a distance, even in deep water, heavy shade, or slightly murky conditions.
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Anatomical Realism: Despite its size and weight, it maintains J:son’s famous realism. The flexible, fine legs and segmented body produce subtle vibrations that mimic a living insect trying to regain its footing on the bottom.
Pro Tip: This is your "go-to" anchor fly for big water. Because of its weight and dark profile, it is incredibly effective in early spring when the water is cold and high. Use it as the point fly in a European nymphing setup or on a short dropper to target large brown trout tucked under undercut banks or behind large boulders.