bassinbrooksy they are very aggressive actually , ive cought many on wacky rigged senkos and i had 3 in a tank as pets and they pretty much ruled the tank and bullied my perch and crappies and they would eat all the feeder fish before any of the others could get to them so i turned the 3 of em into bait ;) youd be surprised though how vicious sunfish can be haha