In my 150 gallon tank, I currently have 2 oscars (8 in and 12 in) and 2 red devil (10 in and 4 in). There was a big Pacu in there so the red devil wasn't fighting. Now that I gave the Pacu away, the red devil kept on bullying on the little oscar. I separated the 10in Red devill into another tank. However the 4 in Red Devil is tearing the 8 in Oscar apart. Is there anything I can do? I'm looking for another tank to separate the 4 in Red Devil too. But I'm afraid it is going to kill or tear all the fin off my Oscar before I can get my hand on a new tank. Please help.
