TYING A CLASSIC MICRO NYMPH
with Catgut Biothread
Prior to tying, soak the part of Catgut Biothread that you want to use in warm water for 3-5 minutes. The color will change from opaque to more milky and transparent and the material will be super-flexible and easy to wrap. When the fly dries, the body will go back to its solid-colored state.
Finished Micro Nymph with dry body
Micro Nymph after a few seconds of soaking in water
By using various colored threads for underbody, different effects can be achieved as the color peaks through the wet material. The combinations are really limitless.