CDC Biot BWO Thorax Fly
The CDC Biot BWO Thorax is a single-wing fly designed for realistic presentation on the water. It features enhanced hackling for natural movement and a ‘V’ cut at the bottom hackle to help the fly ride lower in the water column.
This thorax style fly is praised by anglers for its lifelike appearance and ability to attract fish. The CDC wing adds natural floatant, helping the fly stay balanced and float gently on the surface.
| Feature | Description |
|---|---|
| Wing Type | CDC wing for natural floatant |
| Design | Single wing with enhanced hackling |
| Bottom Hackle | ‘V’ cut for lower ride |
| Usage Tip | Apply floatant dust or powder before use |
FAQ
What makes the thorax style fly more realistic?
The single wing and enhanced hackling create a natural movement that mimics real insects, making it more attractive to fish.
Why is a ‘V’ cut in the bottom hackle important?
The ‘V’ cut allows the fly to ride lower in the water, improving its presentation and increasing the chances of attracting fish.
Can I use this fly without floatant?
Please contact customer service

Christopher Davies –
This fly performs well in still waters. The ‘V’ cut helps it sit lower and fish take it easily. I applied floatant as recommended and noticed better action on the surface.
Rebecca Dowd –
The CDC wing gives it a good float, and the hackling looks natural. I’ve used it in early morning fishing and saw several trout take it.
Bella Johnston –
Great detail in the hackling and wing design. The fly moves naturally and stays in place without sinking too fast. Works well with a light tippet.