NMFS amends the regulations implementing the Summer Flounder Fishery Management Plan (Summer Flounder FMP) to establish management measures for the scup fishery. These measures are contained in an amendment to the Summer Flounder FMP that will be submitted for NMFS review shortly. Emergency implementation of these measures is necessary because of the overexploited status of the stock. This action establishes a minimum fish size for both the recreational and commercial fisheries, and implements a minimum codend mesh requirement for otter trawl vessels that possess 4,000 lb or more (1,814 kg or more) of scup harvested in or from the exclusive economic zone (EEZ).