The Purple Nurple is one of the best general attractors you can fish. It is tied after the manner of the classic parachute mayfly, but it has a two-tone attractor body using pink and purple along with a hi-vis foam indicator that is more visible, durable and buoyant than its predecessor.
It is a great imitation of all species of mayflies from BWO's and PMD's to Mahogany's and March Browns. It can also imitate other species like midges and caddis. If you had one small attractor pattern this would be the one you would want!