Sea-run Fish

Sea-run, or Diadromous fishes were the dominant group of fish species in Penobscot River until the coming of the Industrial Age to Maine. The building of mill dams on small streams, to larger streams, to large dams crossing the mainstem of the Penobscot River cut off these fish from the habitats required to complete their life cycle. The alewives, blueback herring, American shad, American eel and Atlantic salmon that once fed a nation are all but gone from the Penobscot river.

The PIN biologist works collaboratively with state and federal reasource agencies to restore these fish so important to the cultural history of the PIN.