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I spotted a good picture of a Blue Pike posted this year.It was caught in a lake just a bit north of the St. Lawrence near Ottawa, OntarioIt is the first time I had seen one.Saw your post and decided to show you this link to see if the fish looked like this.http://www.iceshanty.com/ice_fishing/index.php?topic=66963.0
Here is a little better example of a silver Pike that Meadowpikeman is talking about. This is completely different fish than the legendary Blue Pike which, like stated, is actually a Walleye subspecies. Here is a silver Pike though. Twenty pounds even.
That does look very similar to a Silver Pike, although I believe I have to disagree with you. Northern Pike have scales which fully cover the gill plates, while Muskellunge has scales which cover only the upper half of the gill plate. If I am not mistaken, the fish in your picture right there has scales which cover only the upper half of the gill plate. I may be wrong, but I cannot definitively tell without counting the number of pores on the underside of the jaw. Still, congratulations on a truly impressive catch!