Any of several freshwater fishes of the carp family that are commonly caught for bait, sport, and food.
Popular species include the European chub ( Leuciscus cephalus ) of Europe and Great Britain, a voracious predator of insects and other fish, and, in North America, the creek chub, or horned dace ( Semotilus atromaculatus ), and the hornyhead chub ( Nocomis , or Hybopsis , biguttata ). These species range in length from 6 to 24 in. (15–60 cm). Their colours vary, tending toward bluish or greenish above with a lighter or silvery belly. The name is applied to many cyprinids in North America and to other, unrelated fishes elsewhere.
European chub ( Leuciscus cephalus )
W.S. Pitt
Eric Hosking