Sure they are. Chubs is given to a range of minnows. There are the Nocomis chubs (river chub, hornyhead chub, bluehead chub, etc.), Semotilus chubs (creek chubs, fallfish). These the ones we usually think of as "chubs", however, there are also some Hybopsis chubs (bigeye chub), Notropis chubs (redeye chub), Gila chub (humpback chub), so on..Not really.