Updated October 15, 2026
    dry

    Iso Dun

    Imitates isonychia adult

    Isonychia comparadun for powerful late-season hatches. Fish love the high-profile spinner.

    Buy at Amazon

    Hook sizes

    #10#12#14

    in tan, cream, dark brown

    Type
    dry
    Imitates
    Isonychia adult
    Difficulty
    intermediate
    Technique
    dry-drift
    Water
    freestone

    When to fish it

    Late summer through fall during Iso hatches.

    Catches

    Where to buy

    Amazon→

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