There is an article in this month's STS about wild steelhead, it may provide some insight. For me, there is one simple rule when in my boat; if it's got an adipose fin, it goes back in the river. (This excludes certain rivers over on the OP where the dorsal, not the adipose, is clipped)
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Any day spent fishing does NOT count against one's life expectancy!!
Cyberfishing from Korea sux!!