This final rule interprets and provides guidance on the requirement of the Magnuson-Stevens Fishery Conservation and Management Act (MSA) that all fishery management plans (FMPs), with respect to any fishery, establish a standardized reporting methodology to assess the amount and type of bycatch occurring in a fishery. The final rule establishes requirements and provides guidance to regional fishery management councils and the Secretary of Commerce regarding the development, documentation, and review of such methodologies, commonly referred to as Standardized Bycatch Reporting Methodologies (SBRMs).