Okay so we went to petsmart tonight and we were trying to decide between an oscar or a convict cichlid, we ended up going home without anything (but a dog rope toy haha) because i didnt feel like spending the money (felt bad because the poor oscars have been in those little tanks forever). So each isn't that big yet, the oscars are probably like 3 inches and the convict is like 1 or 2 inches and right now we have an oscar (small about 2 inches), a jack dempsey and 5 catfish (3 synos, a raphael and a pleco), everything is pretty well under 5 inches and its a 60 gallon grow out- we have a 108 gallon and are building a 8ftx8ft indoor pond in our basement, which should we go with? Is it bad to put 2 oscars together or will we run into problems with aggression with either or?