NOAA's National Marine Fisheries Service issues this interim final rule pursuant to the authorities under sections 303(c) and 304(b) of the Magnuson-Stevens Fishery Conservation and Management Act. The Mid-Atlantic Fishery Management Council and the Atlantic States Marine Fisheries Commission cooperatively manage summer flounder, scup, and black sea bass as a part of the Summer Flounder, Scup, and Black Sea Bass Fishery Management Plan (FMP). At the joint meeting in December 2025, the Council and the Commission's Summer Flounder, Scup, and Black Sea Bass Board recommended 2026 and 2027 summer flounder, scup, and black sea bass recreational management measures. This is a routine action that is done annually or biannually for these three species. For summer flounder and black sea bass, the Regional Administrator must implement coastwide measures or approve conservationally equivalent measures per 50 CFR 648.102(d) and 50 CFR 648.142 as soon as possible following the Council and Commission's recommendation. This interim final rule establishes conservation equivalency for fishing year 2026 (i.e., waiving Federal measures in lieu appropriate state water measures) for the recreational summer flounder and black sea bass fisheries and proposes non-preferred coastwide measures to be effective in Federal waters if, ultimately, w are unable to approve conservation equivalency. This action proposes no changes to the Federal recreational management measures for scup. Recreational management measures for black sea bass are expected to be relaxed across states, while summer flounder measures will remain the same.