In my pretty short time in keeping German blue rams, and black rams, I’ve really started to believe that it’s pretty crucial to be able to separate injured rams when possible. I bought 4 black rams for my 55 gallon long and they were growing really healthy and developing fast. Usually in the dominance fights it’s mostly displays and the small quarrels before they see who’s stronger but on the occasion that one gets hurt, it seemed to result into a snowball where there’s bullying and it eventually dies. Also seems to happen worse either when recently added to the tank or when they grow up together. I think the growing or getting healthier from the fish store causes the tank boss to swap overtime is what the biggest issue is.