[Order Hemiptera, Family Corixidae, Genus Corixa]
The Water Boatman is the most common of all aquatic insects. They take their name from their appearance, their hind legs are long, flattened and fringed for swimming which are used in an oar-like fashion. The body is usually less than 12 mm and the color is customarily dark grayish and often mottled with yellow, brown or black. They are bottom feeders and eat protozoa, microscopic metazoa, and algal filaments. Most species are strong fliers and take off easily from the water surface. These creatures are fast, erratic swimmers which are found above and below the water surface.