I have a 90 gallon tank with a 7 inch Chocolate cichlid( think its a male) and a 7 inch Red Spotted Severum(don't know the sex).Also have 4 Silver Dollars in there too.Problem is that the Chocolate constantly chases the Severum,sometimes pinning him into a corner of the tank behind some plants.They already broke 1 thermometer and I noticed tail of the Severum has some nips taken out of it.I do have places for the Severum to hide and also have a large piece of driftwood in the tank.I got both of them at the same time and in the store they were in a 90 gallon tank.Always thought Chocolates were very easy going.I guess I was wrong.Maybe it depends on the individual fish.Can anything be done to curb his aggressiveness?Or do I have to re home him.If so,what about an Uaru Cichlid?Also heard they are very easy going.