Best Hopper Flies for Fly Fishing in Kenya: A Practical Guide Hopper flies imitate grasshoppers that accidentally land on the water during windy conditions or while moving through riverbank vegetation. Trout recognise these insects as a high-protein meal and rarely ignore an easy opportunity. https://www.postscontent.com/best-hopper-flies-for-fly-fishing-in-kenya-a-practical-guide/