All are fast growing and prolific feeders that out-compete native fish and leave a trail of environmental destruction in their wake. The four types of Asian carp currently found in the United States were imported into the country for use in aquaculture ponds. Through flooding and accidental releases, black, grass, bighead and silver carps found their way into the Mississippi River system.
These carp are native to China. They were originally imported into the southern United States in the s to provide an inexpensive, fast-growing addition to fresh fish markets. They also served to help keep aquaculture facilities clean.
Asian carps were brought from Asia to North America in the s and 70s. Since then they have migrated north through U. Photo: OMNR.
Common Carp, Cyprinus carpiowhile originally from Asia, arrived in North America much earlier and is not one of those species referred to as Asian carps. Click here for more information. All are members of the cyprinid family, which includes carps and several varieties of minnows. Of the Bighead Carp, only three specimens have been collected, all in western Lake Erie, between andand are believed to have been intentionally released.
Four species of Asian carps, bighead carp, silver carp, black carp, and grass carp, are threats to Great Lakes fisheries. Recent peer-reviewed risk assessments for bighead carp and silver carpand grass carp indicate that the Great Lakes are at substantial risk from these three species. The primary threat from Asian carps is competition with other fish for food resources, and the likely ability of these invaders to outcompete native desirable fishes.
Several species of heavy-bodied cyprinid fishes are collectively known in the United States as Asian carp. Cyprinids from the Indian subcontinent—for example, catla Catla catla and mrigal Cirrhinus cirrhosus —are not included in this classification and are known collectively as "Indian carp". All the above, except largescale silver carp, have been cultivated in aquaculture in China for over 1, years.
Asian carp are showing up in the diets of some native fish. This is encouraging news for big rivers that carp have already invaded, but it does not change the fact that the Great Lakes are at great risk of invasion. The first conference began 75 years ago to provide scientists and other natural resource professionals an opportunity to discuss fish and game management issues with minimal political influence.
Spread of Silver Carp — Present. Asian Carp Canada is your resource for information and news regarding Asian carp developments in Canada. This site connects visitors to the most recent prevention technologies, early warning measures, response efforts, and the overall threat of Asian carps to the Great Lakes and beyond.
Asian carpany of several species of fish belonging to the carp family Cyprinidae that are native to eastern Asia, particularly China and Russia, and naturalized in some American waterways. The grass carp Ctenopharyngodon idellabighead carp Hypophthalmichthys nobilisblack carp Mylopharyngodon piceusand silver carp Hypophthalmichthys molitrixfollowing their accidental introduction into waterways in the United Statesare collectively referred to as Asian carp. Floods and bait release by sport fishers allowed members of these species, which had proved invasive in other parts of the world, to colonize the Mississippi River system.
Invasive Asian carp are members of the minnow family that can grow to be very large. They are found in both flowing and still water, tolerating a wide range of water quality and weather conditions. These carp tend to consume large amounts of vegetation and plankton, affecting food webs and system ecology, and are native to Eurasia. Bighead and silver carp are established in the Mississippi and Missouri river basins.