Try as I might, I just can't get the hang of minnow ID.
I caught this individual in the upper Patuxent River in Maryland today. Habitat was a ~10 ft. by 4 ft. hole beneath a rootwad at the end of a riffle. Length was ~4", give or take a few fractions of an inch.
When I first caught it I thought, "Cool, Fallfish." Then when I got it in the photobox I started second guessing that ID. I've spent the past two hours going back and forth with this photo, my Peterson guide, and the internet and I'm no closer to an ID. This is the only angle I have of this fish.
I'd appreciate any pointers that help lead you to your ID. Right now, about the only minnow species in this river I feel comfortable IDing almost every time I catch them are the Common Shiners and Eastern Blacknose Dace.