don't they clip them all though? Are these next generation hybrids then?
I hate to keep a thread going off topic, but just to help answer the question...
If you have a look at the South Coast IFMP (Download link was provided by Fishery Notice - this year was mid-March), and head to Appendix 13, they actually publish the Brood Release Target for each of the salmon species for each hatchery and community project, along with the number of fish in that brood release to be marked, and what type of marking to use.
You'll notice that very few of the facilities clip all their fish. Some in fact clip a small percentage, if any at all.
As an example, the Big Qualicum hatchery (picking this one only cuz it's at the top of the alphabetized list) has a Chinook Brood Release Target of 3,600,000 Chinook for 2012, but the target number to mark by adipose clipping and wire tagging (small piece of coded wire in nostril that you turn heads in for) is 550,000. So for every clipped chinook you find returning to the Big Q, there are 5+ more hatch jobs that are not marked.
Many hatcheries are using otolith marking now, which easily allows them to mark their fish by varying water temperature. But unless you dig out the ear bones and examine a cross section under a microscope, you and I will never know if it's a hatchery fish.
So that's what is being said while REPORTing wild vs non-marked hatchery vs hatchery-marked coho while FISHING in SOOKE. (Is that last bit enough to consider this On-Topic
)