I have a 10 inches albino oscar for about 2 months now and just added two 12 inches red and another albino oscar today. my old oscar is bitting my new ones. both albino are bitting each other on the lips is this signs of breeeding or figthing.
oscar aggression
- Thread starter babychris
- Start date
Probably nothing 2 serious...In the future when you add fish you can difuse their aggression by re-arranging the tank. This removes the established territories and puts everyone on an equal footing. What size tank do you have them in?
Slam
Slam
They got to decide whose boss.Unless one is getting really busted up or they dont calm down in a few days should be ok
keep an eye on them for a few days. 2 adult male oscars will fight over territory and could quite possibly result in death if things get out of hand. however, your tank is pretty big and there are a couple of dithers so you may be ok. Like I said though keep an eye on them for the first few days. there will be some squabbles and hopefully they won't be too serious. however, if you see one relentlessly harrassing another then I'd advise removing one of them. 
All you can do is sit back and wait...... Be sure to check on them regularly! Another thing that helps is having your tank heavily decorated to break their line of sight. They can be abusive when they feel threatened!!!! I had a tiger and an albino in the same tank and had to separate them..... They really do have their own personalities though! Matter of fact, my albino for some strange reason, decided he didn't like the pleco anymore and I came home to find him dead the other day....... 
Just watch them and keep your fingers crossed!!!!!
Matter of fact, my albino for some strange reason, decided he didn't like the pleco anymore and I came home to find him dead the other day....... Just watch them and keep your fingers crossed!!!!!