Today I spoked to a fishstore that told me not to keep delhezis with any kind of fish because they eventually grow big enough to kill everything, even a an oscar. This maked little worried because I keep a delhezi ( 20cm) in my SA cichlid community. No problem so far but what do you think? should I remove my poly? Tankmates : oscars, firemouths , JD , Scalare and two pictus cats.