Researchers head to Superior Maximus to investigate ‘zombie’ fish
June 8, 2026
Contact: Edward Baker, 906-235-6114 or Shawn Sitar, 906-235-1581
The unusually thin siscowet lake trout will be tested by fish pathologists
This month, the Michigan Department of Natural Resources and fish pathologists from Michigan State University will make an expedition aboard the RV Lake Char to Superior Maximus, the deepest point of Lake Superior. The reason for this research vessel’s foray to the deep? To investigate the emaciated siscowet lake trout found in this Great Lake.
These fish, nicknamed “zombies” because of their thin and undernourished bodies, have increased in number in deep waters, sparking concern and interest from the public and scientists alike. Lake trout in this zombie-like condition were discovered by a DNR fisheries research team during recent Lake Superior deepwater surveys of siscowet lake trout. During the upcoming research expedition, the crew plans to investigate — and, they hope, rule out — the possibility of a fish pathogen causing the highly emaciated appearance of these lake trout. They also plan to collect more of these fish for thorough testing. |
Unlike the zombies of movies and television, “zombie” fish aren’t thought to have a contagious disease that they are spreading by biting other fish. Rather, their condition is believed to be a natural ecological phenomenon due to a lack of food in the deep waters in which they live. These extreme waters are prone to ecosystem shifts such as low food availability. Read more |
This month, the Michigan Department of Natural Resources and fish pathologists from Michigan State University will make an expedition aboard the
Unlike the zombies of movies and television, “zombie” fish aren’t thought to have a contagious disease that they are spreading by biting other fish. Rather, their condition is believed to be a natural ecological phenomenon due to a lack of food in the deep waters in which they live. These extreme waters are prone to ecosystem shifts such as low food availability. 





