Big Sunfish like Greens, Pumpkinseeds, Bluegill, Warmouth and Redbreasts in a big community Aquarium (90g.+) I would use large shiners like the Golden Shiner and bottom dwellers like Snail,Flat or Spotted Bullheads (if you can find them) or big madtoms like the SLender or Stonecat; some other fish that I have heard of working are like the Lakechubsucker and Lake or Creek Chubs, and Fat Sleepers and Yellow Perch. Medium sized Sunnies in a medium sized community aquarium ( I believe a 55g on up) like the Longears , Spotted or Dollar sunnies I would use Common Shiners or Striped Shiners and big to medium sized Madtoms (SLender or Stonecat and Checkered, Ozark etc.) possibly with Log Perch, Redspot or Horney head chubs. Small Sunfish like the Bantam and Orangespots in a small community tank(30g and over) you could go with medium sized Madtoms and all kinds of hardy shiners like the Red Shiner, Small Chubs and Small Madtoms like the Tadpole Madtom and medium madtoms like the Checkered, Ozark etc; you could even use the same tankmates for the Blackbanded , Bluespotted or Banded Sunfish. I have heard of other fish being used like Studfish and Shad ....but you would need a very good lid and a long tank for these. PS For all of these fish you want them about the same size or only a little larger ( many fish love eating fish as much as we do), and for all you flamers these are COMMUNITY based aquarium sizes starting at minimum size, Im NOT giving species tank sizes or what I believe is cruel JDM tanks ideas. Thanks Joe.