Habits and Habitat
Green sunfish are able to tolerate a wide range of environmental conditions and are found in streams, oxbow lakes, reservoirs, and ponds. Green sunfish nest in shallow water colonies where nests are often closely packed. Spawning occurs in late spring, when water temperatures rise above 70°F, and may continue throughout the summer. Adults feed on insects and small fish. Because of their enormous spawning potential, green sunfish often overpopulate small lakes and ponds. Small green sunfish often swim from lakes and streams up very shallow, running water after heavy spring rains to colonize new waters, often showing up in new ponds, giving the impression they were “rained in” or “came in on bird feet”. They may establish a population early in new ponds and may eat stocked bass and bluegill fingerlings. Green sunfish are often caught fishing for other sunfish, but are usually too small to be of much interest.