On the Cap today, saw a noob pull a mighty fish.
There are but three fish retainable presently as far as I know. Pink, coho, and chinook. Each of these have pretty distinguishable markings, even though they look different in real life than on the internet.
1) white mouth with black towards the snout, big oval spots all over tail = pink
2) white gums black tongue spots on top of tail = coho
3) black gums, black tongue, black mouth = chinook
If you can't identify your catch with reasonable certainty, it should go back.
The guy caught it and didn't know what it was. He called me over to see, I told him I thought it was a steelhead, white mouth, white gums, white tongue, lightish green with fairly even spots (not that I've ever seen one), no indicators at all of the retainable fish. I told him he should put it back, his buddy argued that the pelvic fin wasn't the right shape for steelhead and that it's adipose was clipped and bonked it, then they bagged it and disappeared.
I wasn't going to get aggressive about it, but it's a bit of a let down for sure.
Point of the story I guess, if you don't have a strong case for identifying your fish, put it back in the river please. You'll catch another one one day...