Some years ago I traveled to the Welsh River Dee, to learn how to upstream nymph with Gwilym Hughes. Over the course of the weekend I learned many fly patterns and methods to catch fish, some have stuck with me ever sense. I returned home with a nymph tied on a size 12 jig hook and was told that it would catch fish in the dark waters that I normally fish. Armed this one of many new flies I approached a pool in my local river with the water slightly colored and deep, I flicked the nymphs into the water and held my arm out straight as I had been told to do and stay in contact with my nymphs. The nymphs sank to the bottom and hardly traveled more than a foot along the bed when the fly line that was on the water acting as the indicator snapped forward and I struck into a lovely wild golden brown trout. For the rest of that day I took fish after fish on that fly it was called The Peeping Caddis.
The peeping caddis can be fished either as an anchor nymph in fast heavy waters or I get great success in flooded conditions, also on its own on the smaller sizes in good fast water, either conditions of the river this nymph is undoubtedly one of those trusted flies that in your box and will always return good sport fishing in all conditions.