I went to my local Petsmart today to get some plants to try to finish off the look of my tank. So I figured why I was there I would see some of the fish they had, one of the salesmen I guess you would call them walked up to me and i started talking to him about a pretty Tiger Oscar they had. I was reading the tag that has all the fish info on it while talking to him, and noticed it said 40gallon for Minimum Requirements for this fish.... I asked him about it and I told him they can get 12+ he preceded to tell me if I keep the water clean and feed him the fish would be fine by himself in a 40gallon tank. Thought that was kind of funny.