Bluegill aggressiveness

Switchblayde101

AC Members
Mar 31, 2019
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My bluegill have been very aggressive and I need to know what to do I have read I should get a 3rd one what should I do
 
Adding more cover might be an easier fix. I wouldn't add another--as I recall this isn't a big tank, right? Blue gill aren't really great aquarium fish for a number of reasons--being jerks is just one of them.
 
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