True -B&W clowns can be mixed with other clowns IF they are of SAME SPECIES ! ie: Ocellaris B&W clown can be mixed with regular Ocellaris Clown or a B&W TRUE PERCULA can be mixed with a regular TRUE PERCULA Clown. Never mixed outside their own species such as Maroons, Saddlebacks, Tomatoes, Skunk Clowns, etc ...