When to use it
- In stillwaters, deep edges, stained water, and low light.
- When a slow mobile profile is useful.
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Reviewed representative comparison← Fly Box
Pattern family · guide 22
Leech Patterns
A mobile streamer family spanning marabou, rabbit-strip, balanced, and sparse leech profiles.
- Size range
- #4–14
- Colors reviewed
- black, olive, brown, purple
- Imitates
- leech, large aquatic invertebrate, general swimming food
Leech patterns share an elongated moving silhouette, but material, weighting, hook orientation, and retrieve vary. Pine-squirrel, rabbit-strip, balanced, and Woolly Bugger forms remain separately labeled rather than being presented as one recipe.
Technical illustration
Representative forms
Leech Patterns family map
A family-level comparison of Rabbit-strip leech, Balanced leech, Marabou leech; no single drawing represents the entire family.
- View
- family comparison map
- Color shown
- black, olive, brown, and purple
- Look for
- long mobile profile; marabou or rabbit motion; weighted and balanced forms; sparse silhouettes
On the water
Narrow the family.
The river, depth, insects, and fish behavior still decide the final presentation. These are reviewed starting points—not a claim about what is happening today.
How to fish it
- Strip, swing, hang, or suspend according to the exact pattern.
- Use pauses that allow mobile materials to work.
Mistakes to avoid
- Calling every dark streamer a leech.
- Ignoring balanced versus conventional hook orientation.
Variant control
Small changes matter.
This first family destination uses a reviewed comparison map. Each named representative remains labeled, and the family is not presented as one exact fly.
Representative family forms
A comparison of materially different forms anglers may mean when they use this family label.- Colors shown
- black, olive, brown, purple
- Weighting
- Varies by exact pattern; verify the named destination before choosing weight.
Review trail
Sources, rights, and limits.
Pattern facts were reviewed on 2026-07-12. Every image has its own rights record; photographed hand-tied flies may still vary slightly in proportion.