Derived from the Stoat's Tail salmon fly, this silver-bodied version has become one of the most popular of all sea trout night flies in use today throughout the British Isles. It is fished on floating and sinking lines. It can be tied on singles, doubles or trebles and as tube-flies, Waddingtons, snakes or needles. In the larger sizes, the hair from a squirrel's tail, dyed black, often replaces the hair of the stoat. The plain black hackle may give way to brighter colours of red, orange, yellow or blue, each fisherman with his preferred variant. All are successful. A truly great sea trout fly.