The bighea carp is a freshwater fish, one of several Asian carps. It is easily recognizable because of its large size and large, scaleless head. Bighead carp are considered a highly invasive species in the United States. Record sizes occasionally approach 100 lb (45 kg), but most places in the Mississippi River basin, a fish over 40 lb (18 kg) is considered very large. Bighead carp are popular quarry for bowfishermen; the bowfishing record, captured in Alabama in 2004, is 85 lb (38 kg).