There are times on the river when you see clouds of small black insects hovering over the water. Inevitably some of these will fall into the water and trout will eat them. Use this black gnat when you see these swarms of bugs in the air and there is no sustained hatch going on. This small dry fly for trout is a great imitator for any dark insect. In black.

Size: 12, 14, 16, 18.