CC & Heppy, members of the genus Cyprinella are collectively known as the "Satinfin Shiners". I guess the Satinfin serves as the type of the genus. The ones which can flourish in stillwaters are the most interesting. The 4 below are probably the best prospects each within the boundaries of their respective natural ranges. The links will take a person to a profile that also includes a range map. These four cover the majority of the real estate east of the Rockies.