Ctenopharyngodon idella (Valenciennes in Cuvier and Valenciennes, 1844) (ITIS)
Grass carp, white amur
Eastern Asia (NAS Database)
1963 (NAS Database)
Imported for aquaculture and for phytoplankton control (NAS Database)
Direct and indirect impacts via: competition for food; significant changes in the composition of macrophyte, phytoplankton, and invertebrate communities; interference with the reproduction of other fishes; decreases in refugia for other fishes; modification of preferred habitat; predation or competition when plant food is scarce. Has significantly altered the food web and trophic structure of aquatic systems by inducing changes in plant, invertebrate, and fish communities (NAS Database)
Government of Canada.
Distribution / Maps / Survey Status
DOI. FWS. Fish and Aquatic Conservation.
Injurious wildlife are wild mammals, wild birds, amphibians, reptiles, fishes, crustaceans, mollusks and their offspring or eggs that are injurious to the interests of human beings, agriculture, horticulture, forestry, wildlife or wildlife resources of the U.S. Plants and organisms other than those stated above cannot be listed as injurious wildlife.
See also: Injurious Wildlife: A Summary of the Injurious Provisions of the Lacey Act (Dec 2017; PDF | 401 KB)
Google. YouTube. PBS NewsHour.
Asian Carp Regional Coordinating Committee.
Google. YouTube; Fisheries and Oceans Canada.
The section below contains highly relevant resources for this species, organized by source. Or, to display all related content view all resources for Grass Carp.
Council or Task Force
Ontario's Invading Species Awareness Program (Canada).
New York Invasive Species Clearinghouse.
Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).
DOI. FWS. Southeast Region.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.
State and Local Government
Rhode Island Department of Environmental Management. Office of Water Resources.
See also: Aquatic Invasive Animals for species of concern
Wisconsin Department of Natural Resources.
Ohio Department of Natural Resources.
California Department of Fish and Wildlife.
University of Minnesota. Minnesota Aquatic Invasive Species Research Center.
See also: Asian carp research