Don't know exactly why but the we had a major fish kill in the river this winter, mainly Largemouth and Musky. The canals and bays are full of them. There are a bunch along the US shoreline and backwater areas as well.
Please contact the Lake Erie MDNR Fisheries Division at:
Natural Resources Manager
Sara Thomas
thomass35@michigan.gov
248-666-7443
Biologist Jeff Braunscheidel
braunscheidelj@michigan.gov
248-666-7445
Covers Detroit, Rouge, Ecorse, Huron, and Raisin river watersheds
Give them a report of what you have seen and where. They may want to go collect some samples.
About 2 weeks ago we had the Lake Erie LSC Citizens Fishery Advisory Committee and it was reported they had only seen about 500 dead Gizzard Shad. They suspected VHS as a possible cause based on physical signs but had no results yet.
Or "Any unusual fish die-offs can also be reported to Michigan authorities by email at DNR-FISH-Report-Fish-Kills@michigan.gov, Whelan said."