Iowa Darter-Pokagon State Park, Indiana

''Etheostoma exile'' is a species of freshwater fish in the perch family of order Perciformes. The Iowa darter, along with about 17 other species of darters, is native to the lakes and streams of Iowa.

In some parts of its range, the Iowa darter is also known as the weed darter, red-sided darter, or yellowbelly. Iowa darters, like many other darters, are about 2-3 in in length and may be easily confused with other darters of similar color.