discus with Geo's and Sev's can work. remember that these fish get large so keep up with wc's. go with larger discus and not less than six. I had 4 wild festivum's in my 120 gal. wild discus tank for the last 8 months. lately I noticed that the discus would all huddle in the back of the tank all the time except when I fed them. I never saw any aggression from the Festivum's but they would always be in the front of the tank. two days ago I removed all the wood to clean and decided to give the Festivum's to my grandson. my discus are now roaming all over the tank. bottom line is, other cichlids with discus will work sometimes, but there is also the chance it won't. mine lived together nicely for a while, but that changed to the point that I had to remove the Festivum's. you may have to decide if you want a Geo/Sev tank or a discus tank.