Few of you got it!! Roundtail Chub!!
The second picture is the best because you can count the dorsal and anal fin rays (9 and 9, typical count for round tail chub).
Also the caudal peduncle is too thick to be a bonytail chub. The caudal peduncle would literally have a diameter close to a Sharpie permanent marker for a fish of that size.
The red coloration is indicative of a chub as the Colorado Pikeminnow does not have red coloration. Pikeminnow develop a gold coloration for spawning coloration.
Bonytail do develop a nuchal hump (think of the Razorback Sucker ridge or the Humpback Chub hump), but not to the same extreme. Roundtail Chub are more streamlined.
There are a few other characteristics which I won't go into detail here as they are a bit more difficult to describe and I would have to take a lot of time to illustrate them.
fishingmanlee, the Roundtail Chub is found in Wolford! I haven't caught one yet, but my dad did. He hasn't seen me that excited in the boat before.
Skiman, the Peamouth isn't found in Colorado. But still a cool looking fish.
BrookieFlyFisher, great to see you on FxR!!
Fish Crazy, it would be great to get out and go fishing again, I'll email you.
fishalope, great catch! That is about the largest I have caught for a Roundtail Chub as well.
If anyone would like more information, please let me know. I'd be glad to answer any questions, if I can.