Semotilus
Semotilus is the genus of creek chubs, ray-finned fish in the Cyprinidae family. The term "creek chub" is sometimes used for individual species, particularly the common creek chub, S. atromaculatus. The creek chub species of minnows can grow from 6 to 10 inches and resemble the grass carp. They can be found in the United States and Canada in any small stream or creek. They hide under small rocks for protection.
Species
Semotilus atromaculatus (Mitchill, 1818) (common creek chub)
Semotilus corporalis (Mitchill, 1817) (fallfish)
Semotilus lumbee Snelson & Suttkus, 1978 (Sandhills chub)
Semotilus thoreauianus D. S. Jordan, 1877 (Dixie chub)
Fishing
Creek chub will go after almost any bait, including powerbait, worms, corn, etc. Surprisingly, they are a very strong fish.
References
Froese, Rainer, and Daniel Pauly, eds. (2011). Species of Semotilus in FishBase. October 2011 version.