Any help with ID?

Doing some recon work on a small costal stream that I theorize has runs of steelhead but no info online. This summer there were thousands of small fish and I thought they were all trout but now I’m second guessing it. Caught these two today(definitely not my target) and if I had to guess the one in the net was a trout and the one in my hand was a coho(very forked tail). I’m no expert though hence why I’m looking for help. I did see two much larger fish, 15-17 inches, that were certainly fresh from the ocean. Got a good look at one and it looked more salmon than steelhead but coulda been either or. R