Hey-
I'm not B-Run but I can gaurentee you that that is a chinook. The coloration is totally bass-akwards to be a steelhead, there are not enough spots, and the head is shaped wrong (notice the small beady eyes). Too bad that you can't see the tail as that is the easiest way to identify them as a chinook has a slightly forked tail unlike the ol' square tailed steely. Hope this helps.

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"Walk softly, but carry a big steelhead"
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Fishing aint luck.