Mayer's Mini Leech

Mayer's Mini Leech is a compact, heavily weighted leech pattern developed by Colorado guide Landon Mayer. The slim profile and tungsten bead allow it to sink quickly into the strike zone, making it ideal for targeting trout in deep runs and pools. Its simple construction and effectiveness have made it a modern classic.

Mayer's Mini Leech fly pattern - imitates Leeches tied for Trout
  • Beginner
  • Year Round
  • Trout
  • Size 12–16

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Mayer's Mini Leech is a compact, heavily weighted leech pattern developed by Colorado guide Landon Mayer. The slim profile and tungsten bead allow it to sink quickly into the strike zone, making it ideal for targeting trout in deep runs and pools. Its simple construction and effectiveness have made it a modern classic.

More Leeches

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Materials

Hook
Standard nymph hook, #12–#16
Thread
70 denier, black
Bead
Tungsten bead, 2.5–3.5mm, silver or gold
Tail
Pine squirrel zonker strip, black or olive
Body
Thread underbody
Collar
Ostrich herl, black or gray

Overview

Developed by Landon Mayer, a renowned Colorado fly fishing guide known for his innovative approach to targeting large trout. The Mini Leech was designed specifically for sight-fishing to selective trout in clear western waters. The pattern's compact size and quick sink rate make it particularly effective when larger leech patterns are refused. Available commercially through Umpqua Feather Merchants.

Related patterns

Behavior & presentation

Natural Behavior
Small leeches migrate vertically through water searching for food, their compact bodies creating minimal disturbance during efficient wavelike swimming. Clear water fish prefer these smaller specimens for quick consumption without the energy required for subduing larger prey.
Where Trout Eat It
Trout intercept leeches throughout the water column in both rivers and lakes, with weed edges and drop-offs concentrating migrations. Slower pools allow confident takes on drifting or swimming leeches.
How to Fish It
Dead drift presentations in rivers allow natural bottom tumbling, while lake retrieves use slow hand-twists with pauses. The heavy tungsten bead reaches depth quickly for both applications.
Best Water
Focus on weed edges in lakes where leeches hunt, drop-offs that funnel vertical migrations, and shoals that cruising trout patrol for prey.
Strike Type
Steady pulls or gradual line draws mark fish swimming away, requiring firm strip-sets to drive the hook.

Fishing strategy

Rigging Suggestions
Fish on 9-12 foot leader with 4X-5X fluorocarbon tippet. Excellent as a point fly in a two-nymph euro rig or under an indicator. In lake, use as part of a chironomid-style presentation with strike indicator set to depth.
Seasonal Timing
Effective as leeches are present in most trout waters throughout the seasons. Particularly productive in when leeches become more active after dormancy, and in during pre-spawn feeding periods.
Pro Tips
Sinks rapidly due to the tungsten bead, reaching depths of 4-6 feet in seconds. The dark silhouette provides excellent visibility to fish from below.
From River & Run

Where to fish it

Rivers anglers pair with this fly, with local shops that stock it.

Open River & Run

River details and fly shops from River & Run, our sister site.

Entomology

Small leeches migrate vertically through the water column in search of food, their compact bodies creating minimal disturbance as they swim with efficient wavelike motions. Fish feeding selectively in clear water often prefer these smaller specimens because they can be consumed quickly without the energy expenditure required to subdue larger, more vigorous prey.

Organism
leech
Life stage
general

Pattern details

  • Moving Water
  • Stillwater
  • Rocky Mountain
  • Southwest
  • active-retrieve
  • strip-retrieve
  • midge-hatch
  • classic
  • modern
  • guide-fly
  • beginner-friendly
  • searching-pattern
  • low-clear-water
  • tailwater
  • freestone
  • spring-creek

Get this fly

Mayer's Mini Leech, tied and ready to fish

Hook #12 to #16 · Beginner