Most species of fish that live in Minnesota lakes and rivers can live in Lake Superior. Fishing in the big lake revolves mainly around lake trout. Any given fishing trip out on the lake can involve catching lake trout, salmon, walleye and steelhead.
However, 95% of what you catch will probably be lake trout.
Springtime, when the water on the surface is very cold, we catch a few more salmon than other times of the year. As the water warms on the surface the fish seem to scatter and feed down deeper. As the fishing goes deeper our techniques change. We have to bring our lures down to the fish using down riggers. At any given time we might hook into a Coho or king salmon (Chinook). Fishing continues like this until the surface water cools and we change to the upper waters again.