Here is the fly pattern sheet for Dennys Callibaetis Nymph. It’s another very effective nymph pattern using Wood Duck. Simple to tie and it catches fish.

Dennys Callibaetis Nymph |
Dennys Callibaetis Nymph Materials |



Daiichi 1710, Dai Riki 730 (2XL), #12 – 14


8/0 tan


Lemon Wood Duck feather or mallard-dyed Wood Duck

Wing case:

Lemon Wood Duck (same as tail)


Copper wire


Hare’s ear dubbing


Grizzly saddle hackle


  1. Attach thread.
  2. Tie in Wood Duck fibers for tail.
  3. Pull back excess wood duck and tie off for wingcase.
  4. Tie in copper wire ribbing.
  5. Tie in grizzly hackle by tip.
  6. Create dubbing loop with hare’s ear and wind forward with touching turns to a point 2 eye lengths back from hook eye.
  7. Wrap copper wire forward using 8 – 10 turns for rib. Tie off behind hook eye.
  8. Wind hackle forward with 3 – 4 turns.
  9. Pull wood duck wing case material forward and tie down. Cut hackle off along sides, creating legs with remaining hackle along bottom of fly.
  10. Whip finish.

Note: Denny ties this fly in tan, olive, black and rust. If using different colors, match body color with dyed mallard for tail, wingcase, and hackle. I tie it unweighted and use different sinking lines for various depths, but you could add weight.

To learn more about the real bugs, visit my blog – Callibaetis Mayflies.


    1. Rick

      Thanks for your comment about Denny’s Callibaetis Nymph. I really like this fly pattern. There’s something about Wood Duck that really looks buggy!


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