Description
Stonefly Nymphs – The Year-Round Secret
Why Stonefly Nymphs are a must-have:
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Protein Power: These nymphs are large, protein-rich snacks that big trout and grayling actively hunt all year round.
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Easy Targets: Because they are poor swimmers, they often tumble along the bottom or drift downstream when searching for new habitats, making them an easy meal.
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The Crawlers: Unlike mayflies, stoneflies don't swim to the surface to hatch—they crawl to the shore. This means they spend their entire life cycle close to the riverbed.
J:son Tungsten Stonefly Nymph 1 Olive Brown (#2)
The Camouflaged Heavyweight – Perlodes and Pteronarcys Imitator The J:son Tungsten Stonefly Nymph 1 Olive Brown in size #2 is a massive 32 mm imitation, weighted with a high-density tungsten core. This "Olive Brown" version offers the most natural, earthy palette in the range, perfectly mimicking the mottled, camouflaged appearance of the Large Stonefly (Perlodes microcephalus) and other big species found in mossy or silty riverbeds.
J:son Tungsten Stonefly Nymph 1 Olive Brown (#2)
The Camouflaged Heavyweight – Perlodes and Pteronarcys Imitator The J:son Tungsten Stonefly Nymph 1 Olive Brown in size #2 is a massive 32 mm imitation, weighted with a high-density tungsten core. This "Olive Brown" version offers the most natural, earthy palette in the range, perfectly mimicking the mottled, camouflaged appearance of the Large Stonefly (Perlodes microcephalus) and other big species found in mossy or silty riverbeds.
Why this fly works:
- Stealthy Depth: The integrated tungsten allows this large nymph to plummet to the bottom and stay there, even in the heaviest currents. While the size is aggressive, the Olive Brown color provides a subtle, natural look that won't spook wary trophy fish in clear water.
- Biological Accuracy: Most large stonefly nymphs spend years on the riverbed, developing a dark, olive-brown patina to match the algae-covered rocks. At 32 mm, this fly captures the exact profile and hue of a mature nymph ready to crawl toward the shore.
- Anatomical Mastery: Despite its weight, it maintains J:son’s industry-leading realism. It features a broad, flattened thorax and flexible legs that flutter naturally in the current, providing the "micro-movements" that signal "life" to a predator.
- Soft-Body Technology: Built from J:son’s signature flexible materials, the nymph feels "real" to the fish. This organic texture is crucial for large flies, ensuring that a trout doesn't immediately spit the hook upon contact
Pro Tip: This is the ultimate "point fly" for a European nymphing rig in big rivers. Because of its realistic, earthy tone, it is particularly effective in the early season (April–June) when Perlodes species are most active. Fish it deep through the "gut" of a pool or along the edges of heavy rapids.