:sad: Ok guys this is my first time on this site so bear with me, I recently set up my very first aquarium n all that good stuff. i have 2 fish. before i left to mexico last month i left my brother with my fish so that he could care for them.. Ever since i came back both fish have been acting aggresive and im haveing a hard time finding out why... i tried changin around the shells and plants in the tank but they are still doing their fighting rituals. My oscar is starting to scar up on the sides and im thinking about seperating them... i dont know why they are now fighting. someone please enlighten me please