I just got a new O. With another O inside the tank. Both are males, and they have been fighting back and forward. So much that the upper lip of the new O started tearing. At the moment, it tear so much that you could see his teeth. They are both healthy and both eating normally.

If one oscar is getting injured then it might be time to rehome one!!

Can you post a pic please

How big is the tank? With 2 males there might be no other option but rehoming, although tank size can be a big factor regardless.

tank is 90G, the thing is that I dont have another tank to put separate them.

put a glass divider in, one each side. wait 2 weeks, then take the divider out. If they still fight really bad then you have no choice but to rehome one

delboybully wrote:

or if bullying continue, use a grate divider so that water will not be restricted in
one side only... and you can keep them together for a longer period of time