20 Incher Stone

20 Incher Stonefly Nymph

The 20 Incher Stone is a proven Western stonefly pattern originally developed in Colorado and widely fished throughout the Rocky Mountain region. Designed to imitate large salmonfly and stonefly nymphs, this heavily weighted attractor pattern is highly effective in fast water, deep runs, riffles, and pocket water where trout feed aggressively near the bottom.

Its buggy profile, natural movement, and large silhouette make it an excellent searching nymph during stonefly activity and throughout the year in rivers and freestone streams.

Key Features

• Proven Colorado stonefly attractor pattern
• Excellent salmonfly and stonefly imitation
• Effective in fast and deep water
• Great searching nymph for larger trout
• Productive in rivers, streams, and freestone water

Imitates

Stonefly nymphs, salmonfly nymphs, and large aquatic insects

Sizes

#06 – #14

Fishing Tips

Fish deep under an indicator, tight-line, or as part of a tandem nymph rig through seams, riffles, pocket water, and rocky structure.