NymphImproved Callibaetis Nymph
The Improved Callibaetis Nymph is a refined stillwater pattern designed to match the Callibaetis mayflies prevalent in western lakes. The natural teal flank tail provides realistic movement, while the muskrat dubbing body and silver mylar wing case create an impressionistic nymph profile. Available with or without a bead for varied sink rates.
Spring, Summer, Fall
Intermediate
Trout
Overview
The Improved Callibaetis Nymph builds on traditional Callibaetis patterns with refined material choices. The teal flank tail provides better movement than traditional materials, while the silver wing case adds flash that mimics the gas bubble forming under the wing case of emerging nymphs. Tie with or without the bead to match conditions.
Pattern Characteristics
Materials
Hook: Tiemco 3761 or Umpqua U101, #16
Thread: Uni-Thread, 8/0, black
Bead: Brite Bead, 3/32", nickel (optional)
Tail: Teal Flank, natural
Body: Muskrat Dubbing, natural
Rib: Ultra Wire, small, silver
Wing Case: Mylar Tinsel, medium, silver
Fishing Tips
Season
Most effective from late spring through early fall when Callibaetis hatches occur on stillwater. Peak activity during afternoon hours.
Presentation
Fish with slow, steady retrieves or let the fly sink and rise naturally. Callibaetis nymphs are active swimmers that fish pursue.
When to Use
Best during Callibaetis hatches or when fish are cruising and feeding subsurface. The beadless version excels for shallow presentations.
Water Type
Designed for lakes, ponds, and slow backwaters where Callibaetis mayflies are present. Particularly effective in weedy areas.
Rigging Suggestions
Fish on a floating line with long leader (12-15 feet) to reach feeding depth. Vary retrieve speed to match fish activity.
Visibility & Floatation
Sink rate varies with bead choice. The silver wing case flash helps fish locate the fly.
