What Is a PMD in Fly Fishing?

A PMD in Fly Fishing stands for Pale Morning Dun. It is a species of mayfly that is commonly found in many areas of North America and Europe.

This species of mayfly typically hatches during the morning hours and can be found near the surface of lakes, ponds, and streams. It is important to recognize the presence of this insect as it can play an integral role in a successful day of fly fishing.

The Pale Morning Dun has a distinct olive-colored body, with yellowish-brown wings and tail. It is important to note that this species of mayfly has two tails, rather than the traditional three tails associated with most mayflies. The body size can range from one quarter inch to one inch long.

Once the fly fisher identifies the presence of this insect, they will need to match their artificial fly imitations accordingly. Dry flies are typically used when imitating a Pale Morning Dun, as these insects spend most of their lifecycle on the water’s surface. However, some anglers prefer to use nymphs or wet flies when this insect hatches in order to imitate its larvae form.

When fishing with this type of fly pattern it is important to be aware that it will often sink quickly due to its heavy weight and body shape. Therefore, it is best to use heavier tippet or leader material when fishing with this type or pattern.


In conclusion, a PMD in Fly Fishing stands for Pale Morning Dun – a species of Mayfly commonly found near lakes, ponds, and streams which hatches during the morning hours. To imitate these insects successfully anglers should use dry flies or nymphs depending on what stage they are at in their lifecycle. Additionally, heavier tippet should be used when fishing with PMD fly patterns as it can sink quickly due to its weight and shape.

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Emma Gibson