# **How to Choose Fly Fishing Flies: Nymph PMD Flash Back Size 18 Trout Pattern**
Fly fishing is an art that requires precision, patience, and the right equipment. Among the most critical components of a successful fly fishing setup are the flies themselves. If you’re targeting trout, the **PMD (Pale Morning Dun) Flash Back Nymph in size 18** is an excellent choice. In this guide, we’ll break down how to select the best nymph patterns for trout fishing, focusing on the PMD Flash Back, its advantages, and when to use it.
## **Understanding the PMD Nymph**
The **Pale Morning Dun (PMD)** is a mayfly species commonly found in rivers and streams across North America. Trout feed heavily on PMD nymphs, making them a must-have in any fly angler’s box. The **Flash Back** variation incorporates a reflective strip (usually made of flashabou or similar material), which adds extra attraction underwater, mimicking the natural sheen of an emerging nymph.
### **Why Choose a Size 18 PMD Flash Back Nymph?**
1. **Matching the Hatch** – Trout are selective feeders, especially in clear water. A size 18 closely imitates the natural PMD nymphs, increasing your chances of a strike.
2. **Visibility & Attraction** – The flashback enhances visibility in deeper or murkier water, making it easier for trout to spot.
3. **Versatility** – This fly works well in various conditions, from slow-moving pools to faster riffles.
## **When to Use a PMD Flash Back Nymph**
– **Early Morning & Late Afternoon** – PMD hatches often occur during these times, making the nymph highly effective.
– **Pre-Hatch Periods** – Before the mayflies emerge, trout actively feed on nymphs drifting below the surface.
– **High Water or Stained Conditions** – The flashback helps trout locate the fly in less-than-ideal visibility.
## **How to Fish the PMD Flash Back Nymph**
1. **Dead Drift Technique** – Use a strike indicator and adjust depth to keep the nymph drifting naturally with the current.
2. **Euro Nymphing (Tight-Line)** – Ideal for deeper runs, allowing direct contact for better strike detection.
3. **Swing & Lift Method** – At the end of the drift, gently lift the rod to imitate an emerging nymph.
## **Choosing the Right Setup**
– **Rod & Line** – A 9-foot 4-5 weight rod with a floating line works best for delicate presentations.
– **Tippet Size** – Use 5X or 6X fluorocarbon for a stealthy approach in clear water.
## **Final Thoughts**
The **PMD Flash Back Nymph in size 18** is a proven trout catcher, especially in waters where Pale Morning Duns are present. By understanding when and how to use it, you’ll significantly improve your fly fishing success.
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Happy fishing! 🎣
