I have been looking to set up my 75 gallon again and I want a nice large fish to put in there by itself... other than a bottom feeder and was wondering what cool large fish would be good in a 75? I was looking into getting a Tiger Oscar but just wanted to make sure there wasnt anything else that I might want instead. I was also looking at the Electric Blue Jack Dempsey but they dont get as big. Any suggestions are greatly appreciated!