I'm a Missourian and am a bit rusty, but that darter looks a hell of a lot like a rainbow darter to me.
There is one tpfr member who rarely posts, but he's another bearded "Dan" and he's an educator somewhere in Virginia (can't remember where). I remember him talking about one of his "as many species as possible" challenges, and I think the two of us were cut from the same cloth in that respect (i.e., I am totally willing to try to pick-off creek chubs if it seems like fun at the time). Many cyprinids are active throughout the winter -- just walk along a creek in January and you'll see that even though your normal targets are absent (or not moving much), that's not the case for some of the smaller creek critters ;).
Just so you know tp -- you've posted a subject that will be perceived (and contributed to) about to the extent as a thread reading "Does anyone know what this (below) is?"