I have never heard of a sockeye in my life, no. As far as I'm concerned, salmon's just salmon. Maybe it's different in Seattle, but again, you run into the same issue that the Guardians have.
No. Sorry. Literally just look at your local grocery store's seafood section. Every grocery store carries it. The wholesale clubs carry it.
Sockeye salmon are native to the pacific northwest, a Kraken is a mythical octopus from scandinavian folklore, what the hell does that have to do with seattle lol?
That being said, come on. You can't rail against guardians and commanders for being to bland and seriously pitch sockeye over kraken. I'd take any of those three over the Golden Knights. High school team name. At least the guardians and commanders have some connection to their cities.