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NymphCaddis Poopah

Nymph pattern designed to imitate the larval and pupal stages of the caddisfly. Versatile fly can be fished in a variety of ways, making it an essential addition to any angler's fly box. Combines bright synthetic dubbing with peacock thorax and bead head for maximum effectiveness.

Season
Spring, Summer, Fall
Difficulty
Advanced
Target Species
Trout
Updated
Apr 2025
Caddis Poopah fly pattern - imitates Caddis tied for Trout

Overview

Caddis pupa pattern tied with bright or tan synthetic dubbed body, peacock thorax, bead head, and sparse soft hackle or wingcase. Imitates the emerging stage of the caddis and is tied slim with natural movement. Often features a bit of flash or UV resin to enhance effectiveness during active hatches. The sparse construction allows it to sink quickly while maintaining a lifelike profile. Effective in sizes #12-18 to match various caddis species.

Materials

Hook: Tiemco 3769, size #14–#18
Thread: Tan UTC 70 denier
Body: Tan ostrich herl
Ribbing: Fine gold wire
Thorax: Peacock herl
Legs: Partridge feather fibers
Shell: Solarez Bone Dry UV resin

Behavior & Presentation

Natural Behavior: Caddis pupae ascending toward emergence swim with synchronized leg strokes and abdominal undulations, creating visible pulsing movements as they rise through mid-column toward the surface. Unlike passive drifting nymphs, these actively swimming pupae follow diagonal ascent paths through current, their motion and urgency making them conspicuous targets during emergence windows.

Where Trout Eat It: Trout intercept this pupa imitation throughout water column as it imitates ascending caddis pupae swimming toward surface. Most effective during active emergence when fish position mid-column in 3-6 foot depths.

How to Fish It: Use high-stick or euro approach with flies drifting deep, then swing them up from deep to shallow imitating natural emergence behavior. Lift rod to trigger strikes as pattern rises—the ostrich herl pulses in current.

Best Water: Target moderate-flow runs and pool heads where caddis emergence concentrates. The ostrich herl collar creates lifelike movement along current seams where emerging pupae drift.

Strike Type: Feel for weight or watch sighter compression as fish grab the ascending pupa mid-column.

Fishing Strategy

Rigging Suggestions: For best results, use a weighted line or add split shot to get the fly down to the right depth (2-4 feet). Fish on 9-12 foot leaders with 4X-5X tippet.

Seasonal Timing: Most effective April through October when caddisflies are most active. Peak productivity occurs during May-June and August-September during major caddis emergences. Water temperatures between 55-68°F are ideal.

Pro Tips: This fly sinks to mimic a larva or pupa. The UV resin shell adds shine and durability, making the fly more attractive to fish. The peacock thorax provides natural iridescence.

Entomology

Caddis larvae, pupae, and emerging adults all present feeding opportunities as they transition between life stages or drift in the current. Pupae ascending to the surface are particularly vulnerable, swimming with a distinctive undulating motion. The Poopah design imitates this transitional movement, with soft materials that pulse and breathe in the current, triggering strikes from trout keyed to caddis emergence activity.

Order
Trichoptera
Common Name
Caddisfly
Organism Type
insect
Life Stage
general

Pattern Characteristics

Advanced Difficulty
Trout
Stillwater
Moving Water
Spring
Summer
Fall
Imitates: Caddis
Pacific Northwest
Rocky Mountain
Sacramento River
dead-drift
indicator-nymph
caddis-hatch
searching-pattern

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