Michael, the point of all this business has nothing to do with family, genus or species.
It has to do with elkcheese not knowing WTF he's talking about in regard to anadromous fish. He claimed his neighbor caught SALMON in the Salmon River near Challis Idaho and killed them and brought them home. The cheese was not talking about steelhead, we were discussing Salmon, everyone knew that salmon meant KING SALMON in particular in the reference the cheese made. In all my travels across 5 states and one canadian province fishing steelhead and salmon, I've never heard anyone refer to steelhead as salmon. I've heard king, sockeye, pink, chum, and silver salmon called "salmon" but there is no common name that describes steelhead as "salmon" anywhere I've ever been. Of course, I doubt I have the fishing experience that the cheese and ten beers do, I havent fished but 25-30 rivers for anadromous fish since 1978...so they may know more than me, its possible.
Anyway, then elkgunner called the cheese on his claim that his neighbor caught and killed salmon there, which if he did, is illegal and would fall under a violation of the ESA.
Then, you have ten beers who throws in the bogus claim that steelhead are salmon so the cheese doesnt look like the idiot he is. Its kind of cute to see ten beers defending the cheese though, by trying to make the cheese look like he knew what he was talking about...I bet they'd make a great couple.
But, there is no arguing that steelhead and salmon are totally distinct species from one another. They are as similar to each other as moose and coues deer...