I had a Cory for over 2 years and he was big and healthy fish. He has shared a tank with a few tetras and things have been good. I moved to a larger tank and added another cory and a dwarf cichlid. I noticed that the cichlid was nipping at my big cory. The cory started to hide and then stopped eating. Then the new cory started doing the same thing. I watched and saw the Cichlid go after the little cory. Within a few days I noticed my big cory wasn't moving. When I looked closer I realized his fins had been eaten. There was little left. I moved the Cichlid to another tank but my cory died the next day :mad2:. When I purchased the Cichlid I was told that they were nice fish and would live fine with my Cory. Is this normal behavior for the Cichlid? I don't know what to do because I really didn't intend to keep two tanks. I am not going to put the Cichlid back in the big tank because I am afraid he will kill the other Cory. Why did this happen?