Nymph20 Incher
The 20 Incher is a heavy stonefly nymph pattern that's designed to sink quickly and stay near the bottom, where big trout often feed. Its large size and flashy peacock herl body make it an effective attractor nymph, and it can often coax strikes from fish when smaller patterns are ignored.
Spring, Summer, Fall
Intermediate
Trout
Overview
This pattern is often tied in larger sizes to imitate big stonefly nymphs, but it can also be tied smaller to imitate other types of nymphs. The use of biots for the tail and legs gives it a realistic appearance, and the peacock herl body provides plenty of flash to attract fish.
Pattern Characteristics
Materials
Hook: Tiemco 3769, size #8-#12
Thread: Black 6/0
Tail: Brown goose biots
Ribbing: Fine gold wire
Body: Peacock herl
Hackle: Brown rooster hackle
Wingcase: Turkey tail fibers
Thorax: Peacock herl
Legs: Brown rooster hackle
Fishing Tips
Season
The 20 Incher can be effective year-round, but it's particularly effective in spring and early summer, when stoneflies are most active.
Presentation
The 20 Incher is designed to sink quickly and stay near the bottom, so it's best fished deep with a tight line or indicator nymphing setup.
When to Use
Use this pattern when fish are feeding on stonefly nymphs, or as an attractor pattern to coax strikes from fish when other patterns are being ignored.
Water Type
This pattern is best suited to moving water, where stoneflies are most commonly found.
Rigging Suggestions
Fish the 20 Incher as the point fly in a multi-fly nymphing rig, with a smaller pattern tied off the bend of the hook.
Visibility & Floatation
The 20 Incher is a sinking pattern, designed to be fished near the bottom. Its large size and flashy body make it highly visible, even in turbulent water or low light conditions.
