Sea lampreys, also known as "vampire fish," are a highly invasive species in the Great Lakes. The pandemic interrupted population management of the sea lampreys across the lakes. A lake trout from Lake Superior that was bitten by a sea lamprey. The fishery commission touts on its website that sea lamprey populations have been reduced by 90% "in most areas of the Great Lakes." Now, fishery managers say the population of the parasitic fish has ticked up across the Great Lakes, The Wall Street Journal reported.

---

Persons: —, Jerry Holt Organizations: Service, National Oceanic, Atmospheric Administration, NOAA, Wired, Star Tribune, Getty, Fishery Commission, US Fish and Wildlife Service, Fisheries, Oceans, Street Journal, Undark Magazine Locations: Great, Welland, Lake Ontario, Lake Erie, Lake Superior, Oceans Canada