Sections 261.3 through 261.8 of this Title, relating to human foods, current good manufacturing practices, shall apply in determining whether the facilities, practices and controls used in manufacture, processing, packing or holding of fish are in conformance with or are operated or administered in conformity with good manufacturing practices to assure that processed fish for human consumption is safe and has been prepared, packed, and held under sanitary conditions. This Part sets forth additional requirements for processed fish and smoked fish establishments.