Pond Boss Forums MANAGING AN EXISTING POND Evaluating and adjusting fish populations Managing Bull Head without predators:

Warmouth are not very common in northern Ohio; actually rare individuals. IMO if you have warmouth they likely came from out of state fish stockers. Study and compare these descriptions of some common Ohio sunfish, Also consider your concept of warmouth could be hybrid bluegill.
http://wildlife.ohiodnr.gov/species-and-habitats/species-guide-index/fish/warmouth
http://wildlife.ohiodnr.gov/species-and-habitats/species-guide-index/fish/green-sunfish