NymphA.P. Nymph (generic)
The A.P. Nymph (generic) is a nymph pattern designed by Marvin Nolte. This effective pattern combines traditional materials with proven techniques for consistent results in a variety of water conditions.
Spring, Summer, Fall
Intermediate
Trout
Feb 2026
Overview
Developed by Marvin Nolte, this mayfly nymph features traditional proportions with a dubbed thorax and soft hackle collar that creates natural movement in the water. The pattern's neutral coloration and segmented body profile make it versatile across different mayfly species. The soft materials compress easily for better hooksets while maintaining a lifelike silhouette that trout recognize as food.
Materials
Hook: TMC 200R
Thread: 8/0 to match the natural
Tails: Lureflash Body Wool (various)
Abdomen: Tying thread
Shellback: Lureflash Body Wool
Thorax: Dubbing to match the natural
Legs: Butts of the shell back, tied to stream down and back, and trimmed
to length
Behavior & Presentation
Natural Behavior: Mayfly nymphs cling to rocks in fast water or swim through moderate currents while feeding on algae, frequently becoming dislodged and drifting helplessly. Their widespread distribution makes them fundamental daily forage across all water types.
Where Trout Eat It: Fish hold in feeding lanes throughout runs and riffles, intercepting drifting nymphs at mid-depth to bottom.
How to Fish It: Present with drag-free dead drift through nymphing runs, using high-stick or indicator techniques to maintain natural drift speeds.
Best Water: Target runs with consistent current, riffles delivering drifting nymphs, and tail-outs where insects concentrate.
Strike Type: Watch for indicator dips, hesitations, or subtle line tightening signaling takes.
Fishing Strategy
Rigging Suggestions: Use a 9-10 foot leader with 4X-5X tippet. Add split shot 8-12 inches above the fly and a strike indicator.
Seasonal Timing: Most effective during peak feeding periods at dawn and dusk. Water temperatures between 45-65°F typically produce best results.
Pro Tips: The dubbed body creates a buggy profile while maintaining a slim silhouette. Adjust weight to achieve natural drift speeds.
Entomology
Mayfly nymphs inhabit various stream niches depending on species, from clinging to rocks in fast water to swimming through moderate currents while feeding on algae and microscopic organisms. Their widespread distribution across all water types and consistent presence in drift samples make them fundamental forage that trout consume daily throughout the season.
- Order
- Ephemeroptera
- Common Name
- Mayfly
- Organism Type
- insect
- Life Stage
- nymph