Don't know if it's been mentioned as this thread is way too long...but since brown trout are present in California, it could well be a sea run brown. The seatrout of Europe bears some resemblance. I wish now that I'd taken some pix... My first thought was chinook looking at the head, but the gumline is a giveaway there. I don't think I've ever seen a king or blackmouth with a gumline that white. It doesn't look like a coho head; it just screams nook.