This pic has shown up on every fishing website and forum around. It has been caught in Saskatchewan, Manitoba, Lake-of-the-Woods, all the great lakes, Wisconsin, Minnesota, NWT, Yukon, and I think even the Glenmore Resevoir in Calgary.
The article (and pictures) were in Esox Angler Magazine this summer and the fish was caught in Holland. It is a pike, but the european strain or sub-species grow to mammoth proportions. Pike this size are caught regularily over there.