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A lake trout (Salvelinus namaycush subsp. siscowet) that has a large amount of body fat and is found only in Lake Superior.

[Short for Ojibwa pēmitēwiskawēt : pimitēw-, oil + iskawē, to have flesh of a specified type.]
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Appendices of catch, diet, and sea lamprey wounding from Siscowet surveys in U.
1989), normal and giant tigerfish Hydrocynus vittatus, lake charr and siscowet, Salvelinus namaycush, sea trout Salmo trutta and brown trout Salmo trutta morpha fario, and the deep bodied precocial form of Carassius and dwarfed altricial morph humilis (e.
Maternal transfer of organochlorine compounds in Lake Superior siscowet (Salvelinus namaycush siscowet) to their eggs.