Salmon trout (Salvelinus namaycush, Walb.) and whitefish (Coregonus clupeiformis, Mitchill) are the most numerous and valuable.
In the inland waters salmon, trout, togue (Salvelinus namaycush), pickerel and bass abound; along the shore there are lobsters, clams and scallops (Pecten irradians); and off the shore are herring, alewives, mackerel, cod, halibut, haddock, smelts, hake, menhaden, porgies and porpoises.
The fishing industry of Lake Superior is important, salmon-trout (Salvelinus namaycush, Walb), ranging from 10 to 50 lb in weight, being gathered from the individual fishermen by steam tenders and shipped by rail to city markets.
The river Nipigon, on the north shore, is famous for speckled-trout (Salvelinus fontinalis, Mitchill) of unusual size; and all rivers and brooks falling into the lake are trout streams.