Depends on how big your tank is and what your aiming to do with them. I have 6 of these 4 males 2 females in with 6 satanoperca leucasticta in a 180 gallon and they seem to get on fine. I don't want to breed them but the females do spawn every couple of months and they can be a tiny bit pushy when this happens. They not pick at each other but nothing too serious. I recommend other similar eartheaters, try too avoid CA cichlids and you should have no problems. Post pics if you have them