Our Tactical AP39N BL Nymph is specifically designed for early spring fishing and the beginning of summer. The fly's buggy appearance is created by the combination of squirrel guard fur hackle and dark cdc, which provide plenty of movement in the water. The thorax of the fly also adds to its movement, making it effective as both an attractor and an emerger nymph. This versatile fly can be used in all types of waters, from clear to murky ones with increased water levels due to rain. Perfect for trout fishing!