What it is
Uni Mohair is a mohair tying thread built with long mohair fibers spun around a durable core. Wrapped on the hook it creates a buggy, shaggy surface with free-flowing fibers that pulse and sweep in the water. It has a lot of movement without needing extra dressing.
What to tie with it
Use it like a chenille: tie it in and wind it to build full, textured bodies. It’s a natural fit for leeches and other streamer bodies where you want the fibers to breathe on the pause, and it also shows up on salmon and steelhead patterns where a lively, fuzzy body is part of the trigger.
Flies and the fish they're for
Wound as a leech body, Uni Mohair is right at home in leech-style streamers fished for trout in rivers and stillwaters, and for smallmouth in lakes and creeks when they’re keyed on swimming, soft-bodied prey. In salmon and steelhead flies it works as a moving body material for swung or stripped presentations in Pacific Northwest and Great Lakes style fisheries, where that constant fiber motion helps the fly stay “alive” in the current.
How it compares
No specific alternative is called out in the evidence, but the reason tyers reach for mohair here is its tendency to make a convincing leech-style profile with a lot of built-in movement when wrapped.
