Good info, Smalma...thank you.

Wow! We need some interested PhD students out there to put in some time on this one...what an interesting thesis it would make if any of this stuff could be figured out with some certainty.

As an obvious fish to see out of its usual place, being bright red and around in low water situations, sockeye would be easy (easier, I guess) to study than would fish that are less obvious and have much larger established ranges, but I wonder what the applications of any sockeye information would have to straying/colonization abilities of fish that aren't so obvious, like steelhead or coho, as they get too easily mixed in with the many other steelhead and coho in the rivers.

Fish on...

Todd