MyFishFinder.com Just like iceshanty but warmer
I thought I would chime in because the description is very similar to the utah chub that have been showing up lately. Some of my spots at Ennis lake are inundated with them now. Supposedly they aren't supposed to be anywhere near Fort Peck yet but only a matter of time. I didn't know what to think when I started catching these but the description is quite similar.
Ciscokid gave me an idea, was it a Cisco? There's plenty in there, we found a few 12"+ inside northerns we filleted there last winter.