Warmouth is in the sunfish family (bluegill,pumpkin seed) It gets confused with the rockbass, the warmouth has small teeth on the end of its tounge, the rockbass does not. I have heard that they can take over a lake or pond very fast. In fact I have fished private ponds and the owners tell me to throw them out if I catch them. Not very good eating either, I believe they have a mud vien but not sure. Uaually not very popular to fish for. Hope this helped some.......gator36