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)
Minnesota Department of Natural Resources.
The Minnesota Department of Natural Resources is conducting an immediate response to the capture of 51 invasive carp on the Mississippi River. The invasive carp were caught by two commercial fishing operators near La Crosse and Trempealeau, Wisconsin, during routine spring netting last weekend. In response to this discovery, the DNR is working with the U.S. Fish and Wildlife Service, the U.S. Geological Survey, the Wisconsin DNR and commercial fishing operators to conduct large-scale netting, studies of the captured carp and increased monitoring. "The location where these fish were caught is commonly netted because of concentrations of commercially valuable fish," said DNR invasive carp field lead Ben Larson. "This is the largest congregation of invasive carp we've seen this far upstream." Invasive carp have been progressing upstream since escaping into the Mississippi River in Arkansas in the 1970s. These large fish compete with native species and pose a threat to rivers and lakes.
Invasive carp captures must be reported to the DNR immediately. Call 651-587-2781 or email email@example.com. Take a photo and transport the carp to the nearest DNR fisheries office or make arrangements for it to be picked up by a DNR official. More information about invasive carp is available on the Minnesota DNR website.
Government of Canada.
Ohio State University. Ohio Sea Grant College Program.
The Great Lakes Sea Grant Network has released a comprehensive and coordinated outreach and education report on Asian carp in the region. The document includes information on carp life history, movement and behavior, monitoring, control, ecosystem impacts and gaps in current knowledge that need to be addressed further. The plan’s development was funded by the Great Lakes Restoration Initiative through the Asian Carp Regional Coordinating Committee. The final report can be downloaded here (PDF | 5.6 MB).
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; Toronto and Region Conservation Authority.
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
New York Invasive Species Clearinghouse.
Texas Commission on Environmental Quality, Galveston Bay Estuary Program; Houston Advanced Research Center (HARC).
DOI. FWS. Southeast Region.
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