From what I have heard, these Coho, about ready for egg take into the state hatchery process, are all dead due to vandalism.
The criminals involved, knew what they were doing. They simply cut off O2 supply.
The pic is not the greatest, but you can see reference to the density just by the fin's and such out of the water. You actually need to be there to see it first hand.
Now that's dumb!
