I think Bill M was talking generally. It's fairly rare to see such a silver fish such as the one in the picture, even at the pier. Maybe one in 10 fish have a silvery appearance and probably 99.9 percent of these silver fish will be females. These fish, for whatever reason, don't seem to get as dark. I've caught fairly silver fish in the river (when I used to fish the rivers), that were very ripe and spitting eggs.
In the northern tribs (Bighead, Owen Sound etc.), they used to have the odd spring run chinook come through in April/May. These were pure chrome fish and would be fully ripe. If anybody has info on this strain, I would be very interested in hearing about it. I have only seen three caught in 25 years of fishing the rivers. Another interesting note - the eggs of these fish were very fragile, would break extremely easy, and couldn't be water cured like a typical chinny egg.