I can't see a picture. :o(
You mention he is a "good breeder". Do you mean you are breeding him CURRENTLY, or he had been bred by the people who had him previously? On this website, posting about intentional breeding is not allowed. We recommend that rabbits be housed indoors as members of the family, and also be spayed/neutered to prevent pregnancy and prolong the life of the bunny. If you need information about altering or housing solutions, please ask. If he is being aggressive towards your other bunnies, we can also help you work on bonding them properly once all the rabbits have been altered.