Although I have no doubt whatsoever it's a juvenile pike I agree they usually loose the bars by that size.
How can you reach that conclusion... I would say that looks like a typical small tiger muskie !! You can't base the color patter of that fish.... a fish thats in the 21" range. with a fish thats 4" to 6 ". I would say thats an average tiger... not an abnormal pike.
look under google images for tiger muskie. on page 2 three rows down second picture from left, you will find an exact match to your muskie just larger. same markings and color. IT IS A MUSKIE
ive only caught 1 true muskie but it has light lines on a dark back
Besides the light markings on a dark background, the thing that strikes me the most are the caudal fin markings. In every single picture I've seen of a musky, tiger or otherwise, the caudal fin markings are very distinct spots. This fish, however, has a very clear striped pattern like every picture of a northern pike I've seen.
I'm sold !! Northern pike it is !!