Shifts Endangered Species Act (ESA) responsibility for salmon, eels, and other migratory fish that move between fresh and salt water from the Department of Commerce/NOAA’s National Marine Fisheries Service to the Department of the Interior. It updates ESA definitions so “Secretary” means the Secretary of the Interior for these fish and adds clear definitions for anadromous and catadromous species.

Allows certain recent NOAA/NMFS final decisions (made within three years before the transfer) to be reconsidered by Interior if requested within one year after the transfer is completed. Keeps ongoing rules, permits, consultations, and lawsuits in place and ensures existing procedural rules continue during and after the handoff.