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Waterhen Bloa fly pattern
Wet · #273 of 532

Waterhen Bloa

The Waterhen Bloa is a sparse soft hackle wet fly with a pale body and smoky blue-grey collar, a deadly old pattern for trout feeding on tiny emergers. It supports Waterhen Bloa fly pattern, North Country spider, and best traditional soft hackles for trout.

Imitates: Small mayfly and midge emergers

Quick Reference

Best Sizes
#14-18
Best Season
Spring through fall
Best Conditions
Low clear water, soft currents, and subtle hatch windows
Water Temp
45-62°F
Recommended Tippet
5X-6X

How to Rig It

Fish alone or as the top dropper above a slightly brighter soft hackle.

How to Present It

Swing slowly or dead-drift just under the film through gentle seams.

Why It Works

The grey waterhen hackle breathes delicately, making the fly look alive without bulk or flash.

History

A cornerstone of the old Yorkshire spider tradition, prized whenever trout wanted understated motion.

Pro Tip

Fish it when trout are bulging just under the surface but refusing standard dries.

Frequently Asked Questions

Is Waterhen Bloa a mayfly imitation?+

Yes, most anglers fish it as a subtle mayfly or midge emerger, especially in smaller sizes.

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