There have been some studies on that and the size of the fish. The large ones, back when there was fishing, were the ones that were taken.
I go back to the traditional knowledge side of it. The indigenous tribes along the Alaska side of the Yukon River would say that they knew exactly when they had Canadian-origin fish because of the size of the fish. They said they were oilier, heavier and relatively larger in size, and they were harvested first. The genetics, of course, are impacted by that. Over the years, what we're getting through is more of a torpedo-shaped salmon now and of course that means we need more of them on the spawning grounds in order to get their numbers back up.