Not a salmon fisherman never caught one..

So in the video of the guy with the dip net at the fish ladder was bonking some. I assune he may have wanted to keep them? Dunno

How many different types of salmon are there (i know i could google that) BUT what i am curious about is in the comments on the video some people said they were humpies? What does that mean?

Of all of the species, which are best for eating and is there a species that is just not edible..