Cumberland Darter (Etheostoma susanae)

Description: 

As the common name suggests, this federally endangered species is found in the Cumberland River Drainage, where it is currently restricted to tributaries above Cumberland Falls. They are found in slow-moving sections, usually pools and stream banks with sandy or rocky substrate, of small to medium rivers. Cumberland Darters have a coloration of brown W’s and X’s on their sides, and breeding males develop dark fins with black edges.