Creek chub?

Can anyone positively identify the first picture? It came from Tischer Creek in Duluth, MN. I caught dozens of creek chubs that looked like the second picture, included for reference, but this one was different in several ways. Notice the all-black eye, scale pattern, and pale and odd coloration almost with a translucent effect. Could it be anything other than a creek chub, Semolitus atromaculatus? If not has anyone encountered anything similar? I'm wondering if it had some sort of mutation. (I regret not checking the dorsal fin at the time for a black spot at the base...doh!)

The third picture is a blue slime left on my hands by one of the chubs. It brought to mind the blue walleye (not the extinct Lake Eerie Blue Pike but the blue morph of the yellow walleye, with blue slime). Has anyone heard of blue pigment occurring in the slime of any other type of fish? Or perhaps my fish had been eating berries and pooped on me, I don't know. It was interesting and surprising though, and I thought I'd share the picture.

Edited by moxostoma, 17 October 2009 - 12:25 AM.

It looks alot like a dark phase creek cub to me, though I wouldn't trust my judgement as lately I am having doubts on my abilities to identify chubs.

Yes those are creek chubs, Semotilus atromaculatus.