NMFS is implementing 2015 specifications and management measures for Atlantic mackerel, 2015-2017 specifications for Illex squid, 2015-2017 specifications for longfin squid, and 2015-2017 specifications for butterfish. This action also establishes a simplified butterfish fishery closure mechanism. These specifications set catch levels to prevent overfishing and allocate catch to commercial and recreational fisheries. Additionally, the simplified butterfish closure mechanism makes operation of the fishery more efficient and consistent with the higher catch limit for butterfish. These specifications and management measures are consistent with the Atlantic Mackerel, Squid, and Butterfish Fishery Management Plan and the recommendations of the Mid-Atlantic Fishery Management Council.