LeechTwisted Mohair Leech
The Twisted Mohair Leech is a jig-style leech pattern from Fly Fish Food that utilizes Krystal Core Leech Yarn for exceptional movement and flash. The olive coloration with gold bead creates a natural yet visible presentation that works in a variety of water conditions. Built on a barbless jig hook, this pattern rides point-up to reduce snags while the leech yarn body undulates enticingly with every movement.
Year Round
Intermediate
Trout
Dec 2025
Overview
This Fly Fish Food pattern by Cheech demonstrates the effectiveness of Krystal Core Leech Yarn for creating lifelike movement in leech patterns. The yarn's built-in flash core adds subtle attraction while the soft fibers create undulating movement in the water. The gold bead provides weight and serves as an attractor point, while the dark mocha brown thread complements the olive body without creating harsh contrast.
Materials
Hook: Fulling Mill 5045 Jig Force Barbless Hook, #10
Thread: Semperfli Classic Waxed Thread 6/0, dark mocha brown
Bead: Fulling Mill Slotted Tungsten Beads, gold, 3.8mm
Body/Tail: Nature's Spirit Krystal Core Leech Yarn, olive
Behavior & Presentation
Natural Behavior: Leeches undulate through the water column with distinctive wave-like swimming motions, pausing frequently between active swimming bursts. Their predictable rhythm and slow movement make them vulnerable to pursuing trout.
Where Trout Eat It: Fish hunt leeches throughout the water column in lakes and ponds, or intercept them drifting in tail-outs and slow runs in rivers.
How to Fish It: Use slow erratic retrieves with pauses, or dead drift allowing the leech yarn to undulate naturally with current.
Best Water: Target tail-outs where leeches drift in slower currents, weed edges in lakes, and riffle edges transitioning to deeper water.
Strike Type: Strikes feel like steady pulls or gradual line draws as fish swim away with the leech pattern.
Fishing Strategy
Rigging Suggestions: Fish on 9-12 foot leader with 4X-5X fluorocarbon tippet. The tungsten bead provides adequate weight for most presentations. Can be fished as point fly or as the anchor fly in a euro nymphing rig.
Seasonal Timing: effectiveness with peak performance in and when leech activity is highest. The olive coloration matches natural leeches found in most waters throughout the seasons.
Pro Tips: The 3.8mm tungsten bead provides rapid sink rates while the gold finish adds attraction. The olive leech yarn with krystal core creates subtle flash and a natural profile visible to fish from multiple angles.
Entomology
Hirudinea species attach to submerged logs and rocks, then release periodically to swim through mid-water depths using their posterior suckers as rudders. Their movement is characterized by graceful undulations that create mesmerizing motion patterns visible to fish at considerable distances. Predatory species target leeches because these invertebrates lack escape speed and their swimming behavior makes them conspicuous against darker backgrounds.
- Organism Type
- leech
- Life Stage
- general