Although not as common south of the border, much of the First Nations salmon fisheries were (and probably still are) subsistence. They catch and preserve the year's food supply during the run. Same as in AK where there are lots of folks (I and NI) that rely on subsistence harvest.

An interesting aspect of the US/Canada treaty, at least the first iteration in mid '80s, reserved the first 400K harvestable Fraser sockeye for the FN subsistence fishery. These fish were above the escapement goals but taken off the harvestable before it was divided between the Countries.