I would recommend it, Oscars are extremely rewarding fish to keep. If your tank is large enough and you have suffient filtration you wont have a problem. I would recommend keeping either two or four and above, I have had problems with three as two seem to be pairing up and one gets pushed around and is only allowed where the others let him. They don't injure each other just chase him (I think I got 2 males and 1 female) to certain spots in the tank.