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 Stonefly Nymph 1 Black – Barbless (#2)
The High-Contrast Giant – Dinocras and Pteronarcys Specialist The J:son Stonefly Nymph 1 Black Barbless in size #2 is a massive 32 mm imitation. This is the standard (unweighted) version of the largest stonefly in the J:son range, now optimized with a barbless hook for catch-and-release fly fishing in technical waters.
Why this fly works:
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Max Silhouette & Contrast: At 32 mm, this nymph is a substantial meal. The deep black coloration provides the strongest possible silhouette, making it easy for trout to spot against a light riverbed or in the turbulent "white water" of heavy runs.
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Natural "Tumble" Drift: Because this model is unweighted, it avoids the "anchor" effect of tungsten. It drifts with a natural, lifelike buoyancy, allowing the current to catch the body and legs so it rolls along the bottom exactly like a real insect that has lost its footing.
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Ethical Trophy Hunting: The premium barbless hook is designed for superior penetration and a secure hold during the fight, while ensuring the fish can be released quickly and with minimal stress—crucial for protecting large, wild fish populations.
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Anatomical Soft-Body: Featuring J:son’s signature flexible legs and segmented wing pads, the fly creates subtle micro-vibrations. The soft material feels organic to the fish, preventing an instant rejection and giving the angler more time to set the hook.
Pro Tip: This is a fantastic "searcher" fly for large rivers. If you are fishing deep pools with a sink-tip line, the unweighted nature of this fly allows it to "hover" and flutter just above the snags while the line gets the depth. It is also the perfect trailing fly behind a heavy tungsten nymph in a "piggyback" rig.