Troutline Biothread (nymph body)

We have the pleasure to offer you one of the best fly-tying material used in tying nymphs, Catgut Biothread. This fantastic fly-tying material has an opacity aspect when it's dry and when it gets wet it becomes milky translucent. When it's dry, the material is stiff and a little bit difficult to work with, so we recommend it to be used wet.

For that, you should keep the material for 3-5min in warm water only the part that you want to use. The color will change from the opaque to milky transparent.

If it's used different threads in different colors the nymph will have shades in the under-body color.

It is a magic material and is absolutely fabulous for making bodies for nymphs and emergers.

Sizes listed with color option