Fish

Wildlife officials hope genetic tests will help reveal how invasive crayfish got to a state fish hatchery in Mattawan.

Michigan health officials have updated their guidelines on toxic "forever chemicals" in fish, tripling the number of lakes and rivers, where anglers are advised to not eat their catch.

The arctic grayling vanished from Michigan in the 1930s, but the salmon-like fish could soon make a comeback. Around 500,000 fertilized eggs could be stocked this spring.

The state euthanized more than 31,000 Atlantic salmon after a bacterial infection spread through a hatchery in Wexford County.

The yellow perch has been declining for decades in Saginaw Bay as a result of a rapid growth of walleyes. Local commerical fisheries say that has caused struggles for their business.

After years of planning and legal delays, construction of the new FishPass project is underway.

Researchers still don't know much about didymo or "rock snot," a microscopic algae that can bloom into thick, slimy mats on rivers.

The state is asking anglers to report if they catch trout with tags in the Saginaw Bay region.

The project could make the river more appealing to arctic grayling — a fish species that disappeared from the state around 90 years ago.

The shoreline along Buffalo Reef has been contaminated with stamp sands for decades. Now, the Michigan Department of Natural Resources says it has a preliminary plan to clean it up.