The Frances was originally developed in Iceland in the late 70’s as a less complicated variation of Peter Dean’s Black Eyed Prawn Fly. It has proved to be phenomenally successful. Available in any number colors; red and black being the most common, to white, blue, olive and orange; and of variations from micro trebles to depth-plumbing cone tubes this is a hugely successful salmon fly.
The Frances is the go-to fly in any condition anywhere in the world if you don't what fly to choose.
Nano size version is especially good for fooling tricky low water salmon.