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How do dry flies differ from wet flies and nymphs?

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In fly-tying, artificial flies are categorized by the stage of insect life they imitate and their position in the water column.12

  • Dry Flies: These are designed to float on the surface, representing the imago (perfect) stage of an insect. They are constructed with materials that aid flotation to imitate insects emerging from the water, laying eggs, or mating.12
  • Wet Flies: These are intended to drift underwater. They are designed to be taken by fish as a drowned mature fly, a nymph, a minnow, or other food sources.31
  • Nymphs: These imitate the larval or nymphal stage of an insect's life. Unlike dry flies, they are often tied over lead wire to help them sink, representing larvae that have been dislodged from the bottom or are rising to the surface to emerge.12

While dry flies focus on surface presentation, both wet flies and nymphs are subsurface lures, with nymphs specifically targeting the immature life stages of aquatic insects.12