I had 6 pbass in my 480 10-20".. with 3 silver aros 15-24", 1 36" croc gar, 15" tsn, 5 uarus, 2 12" bichirs... ummmm.. I had a couple other gars in there from time to time. As long as you have good enough filtration, enough money for food and the time to do water changes, you can fit a lot in a 480...