Fishing in Lake Superior? You can help the Michigan Department of Natural Resources evaluate the Lake Superior splake fishery by reporting marked splake. Splake, which are a hybrid cross between lake trout and brook trout, have been stocked in Lake Superior most years since 1971, with annual stocking since 1990.

In Lake Superior, the DNR stocks splake in Munising, Copper Harbor and Keweenaw Bay. The goal is to create nearshore fishing opportunities in the smaller bays of Lake Superior, where some fisheries are available year-round. This study will help fisheries managers understand the percentage of stocked fish caught by anglers, the home range of splake, and harvest metrics such as harvest rates and size at harvest by year and location.

“The data we collect from anglers assists in making decisions on how to best manage Michigan’s fisheries,” said Patrick Hanchin, Lake Superior Basin coordinator. “Every marked splake reported matters to the data collection process. We’ll be marking splake through 2025, with the evaluation study being conducted through 2030.”

When anglers catch a splake, they should inspect it for missing fins or a jawbone clip, which indicate it has been marked. Marked fish then can be reported at to give information such as species, length, weight, sex, and date and location caught, or by contacting a local DNR office.

Anglers also can report marked splake to DNR creel staff stationed at various ports along the Lake Superior shoreline. Because they’re genetically tied to both lake trout and brook trout, splake can take the external appearance of the parent species, making them difficult to distinguish. Creel staff can help to correctly identify the fish, distinguish marks on fish and record angler trip data. Everyone is encouraged to provide their fishing trip information when approached by DNR creel staff.

Anglers are reminded that other natural resources agencies and tribal units mark a variety of fish species for different evaluation purposes. For more information on fish marking in Michigan, visit