So basically I have a 75 gallon,that used to,hold a convict,cichlid oscar and a featherfin catfish. So my Oscar after 4 years to annoy died due,to a tumor so in,the last 2 weeks I added 2 fish a firemouth and a jack Dempsey all is well So far. There has been minimal,chasing due,to all my,plants at,caves there's plenty of,territory to stake out. So basically my,question is could I add some type of,schooling,fish to like 4 spotted silver dollars the smaller variety,that,get about,5,inches. Or maybe giant,senior or,denison barbs? All thoughts and replys are helpful !