I have a Tangerine Tiger that is almost 4 inches and the largest in the tank. With the other two gone he seems to be more a peacekeeper than the new bully on the block. I noticed my smaller fish have come out of hiding and my 3 inch Ruby Crystal is chasing them around. With an all male set up I know there will be chasing and one will try to be the bully. I'll probably be looking to sell/trade the Tangerine Tiger in a couple months. He'll be too big for my 40 long.