This is an interesting topic. I've also been curious about the Tule Chinook. I grew up in Leavenworth where I fished the Icicle and Wentachee rivers for Chinook. They travel hundreds of miles and are still bright with excellent meat. I've fished the Carbon the last couple of years and noticed that they are almost all dark.....only a few miles from the salt!!! The few that I thought were bright enough to bring home still had washed out meat very little redness left in it. Is it possible that Carbon river fish are Tules?