On a related note...
Until very recently (in biological terms) the steelhead and landlocked steelhead [TIC] were <b><i>salmo gairdneri</b></i>. What's in a name?
I am no biologist and only anecdotal experience FWIW and I still believe steelhead/rainbow are not more related to coho and chinook than cutthroat (<b>salmo</b> clarki) and other trout which are indigenous to the same waters.
The re-classification was made based upon protein composition in the flesh ignoring other facts like:
a) don't die after spawning, salmo don't - oncho do.
b) common physical features like a vertical anal fin trailing edge, square tail, etc
c) basically it says that rainbows are pacific salmon because of protein structure
Honestly I guess I don't care how they're classified in text books. Steelhead are the epitome of a <i>trout's</i> potential in the wild.
Check out these Lahontan Cutthroat trout.... <!--http--><a href="http://www.brrc.unr.edu/papers/lct/trout.html" target="_blank"> HERE! </a><!--url-->