This Act establishes the Great Lakes Mass Marking Program to use automated technology to tag hatchery fish, providing essential data for science-based fisheries management across the Great Lakes basin.
Gary Peters
Senator
MI
The Great Lakes Mass Marking Program Act of 2025 establishes a dedicated federal program within the U.S. Fish and Wildlife Service to enhance science-based fisheries management in the Great Lakes. This initiative authorizes funding to systematically mass-mark hatchery-stocked fish to accurately assess stocking effectiveness and the impact of management strategies. The collected data will be shared with Federal, State, and Tribal partners to support restoration goals and sustain the region's vital fisheries economy.
The "Great Lakes Mass Marking Program Act of 2025" is essentially a funding and formalization bill for a crucial piece of environmental science. This legislation establishes the Great Lakes Mass Marking Program within the U.S. Fish and Wildlife Service (USFWS) and authorizes $5 million annually for five years (Fiscal Years 2026 through 2030) to run it. The core purpose? To tag hatchery-raised fish stocked in the Great Lakes to see how well they survive, how they interact with wild populations, and whether current management strategies are actually working.
If you’ve ever paid attention to the news about the Great Lakes, you know the ecosystem is under stress—invasive species are changing the food web, and the populations of native fish are volatile. Right now, federal, state, and tribal agencies stock about 21 million hatchery fish annually to support both native species recovery and the massive recreational and commercial fishing industries. Congress noted that this regional fishing economy is worth over $7 billion, which is why accurate, science-based management isn't just nice-to-have, it’s necessary.
This bill formalizes the use of "mass marking" technology—automated tagging—to track these stocked fish. Think of it like putting a tiny, harmless barcode on every fish before it goes in the water. This allows scientists to later distinguish between a wild-born fish and a hatchery-raised one when they are caught. This level of precision helps managers make smart decisions about how many fish to stock and where, ensuring they aren't accidentally messing up the balance between predator and prey fish populations (SEC. 2).
The Director of the USFWS is put in charge of the Program, authorized to buy the necessary equipment, tags, and even hire extra staff "as required" to keep things running smoothly. Critically, the Director is mandated to work closely with state, tribal, and federal fish management agencies, as well as the Great Lakes Fishery Commission (SEC. 4).
This collaboration is key because the data collected—which is required to be shared—isn’t just for the USFWS. It helps everyone involved evaluate habitat restoration efforts, meet restoration goals, and keep the economic health of the fishing industry stable. For a commercial fisher, this means more reliable data on fish populations, leading to more sustainable quotas and fewer surprises. For the average taxpayer, it means $5 million a year for five years is being invested in precise environmental management rather than guesswork.
While this bill provides a solid, authorized funding stream of $25 million over five years, that funding is temporary. The authorization ends after Fiscal Year 2030 (SEC. 5). For a long-term scientific program that relies on continuous data collection to track fish life cycles, this temporary funding creates a future cliff. Agencies will need to secure renewed funding to ensure this crucial data collection doesn't stop just as the program hits its stride. This is a common challenge with government funding: securing the initial investment is one thing, but ensuring the long-term stability of an effective program is another.