With their unique circular row of teeth or oral sucking disk, serrated tongue, and eel-like shape, make sea Lampreys effective killers and a type of fish known for their invasive nature. Sea Lampreys invaded the Great Lakes in the early 19th century through the wetland canal, connecting Lake Ontario and Lake Erie. Preying on commercially important fish species, within a decade, sea Lampreys had spread to all five Great Lakes. Within a century, the unchecked proliferation of sea Lampreys led to the collapse of the trout fishery. By the 1960s, sea lampreys had significantly reduced the annual commercial catch of … Continue reading Invasion of the Great Lakes: How Sea Lampreys with  Oral Sucking Disk Devastated the Trout Fishery