Great Lakes Mass Marking Program Act of 2025

# Great Lakes Mass Marking Program Act of 2025 - Summary **What the Bill Would Do** This bill would establish a federal program to mark and track fish populations in the Great Lakes. The "mass marking" program would involve placing identifying marks on large numbers of fish before they're released into the lakes. This would help scientists and fisheries managers monitor fish movement, survival rates, and population health across the Great Lakes ecosystem. **Who It Affects and Key Details** The program would primarily affect fisheries managers, commercial and recreational fishing industries, and environmental agencies responsible for Great Lakes management. By tracking marked fish, researchers could better understand which species are thriving or struggling, how fish migrate between lakes and states, and whether stocking efforts are working effectively.

This data could inform decisions about fishing regulations, conservation efforts, and resource management across the five-state Great Lakes region. **Current Status** The bill is currently in committee review (S 2880 in the 119th Congress). It was introduced by Senator Gary Peters, a Michigan Democrat, reflecting the Great Lakes' importance to his state. The bill has not yet advanced to a full Senate vote.