Leeches are some of the most effective stillwater and streamer patterns around and the Olive Bead Head Mini Leech is a must for your box. Olive is a color found in many natural food choices and fish will refuse it less when they are selective. Try Using a sparsely dressed leech like this pattern when more traditional patterns are off. The flash and darting action the bead gives this fly extra fish attracting qualities. Most freshwater fish find the Olive Mini Leech appetizing and they will eat it in almost any type of water.