Mosquito - Dry Fly. All fly fishermen have a love hate relationship with our common Mosquito, but there is now doubt Trout see things differently. As an abundant and staple part of their diet you cannot be without them. In addition to rivers and streams, the Mosquito Dry fly is a top performer on our Canadian and US still waters, maybe it is its similarity to the Callibaetis Mayfly that accounts for this, who knows, just stock up your boxes and let the fishing begin.