Tough one. Spots like a chinook; deep red body color and hooked jaws line a coho; teeth like only a chum should have (and barred markings along the sides)....

I was convinced it was a coho until I looked at the area directly behind the jaws and the first portion of the body close-up. I noticed a distinct golden hue in those areas, which, combined with the big dorsal spots, led me to boot chinook, but I could be convinced of anything.