Iron Blue Dun

Iron Blue Dun is a classic dry fly that imitates small, dark grey mayflies commonly found in colder, clear waters. It is particularly effective during highly selective feeding situations when fish are focused on small, subtle insects. Its slim profile and natural coloration make it very realistic, while the parachute hackle provides stability and good visibility for the angler.

This is an excellent choice for challenging conditions and wary fish, especially in mountain streams with delicate but active hatches.

Best for: Trout, Grayling

Ideal conditions: Small mayfly hatches, cold clear waters, spring and early summer.