Yea - i've heard a wide spectrum from them being extremely docile to very aggressive. This is a 29 community tank - but after i move they will get to keep the tank but most of the other stocking will be removed. While not scaped in a @MacZ approved fashion it is imho well scaped with lots of hiding places. I had four hongsloi in it for 2 years and they always managed to find adequate hiding places.My male agassizii once mature was one of the most dominant and aggressive fish I have kept...(and that includes several CA cichlids...). Maybe they are not all like that though...