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Asian Carp Brochure sippi River Basin, with huge numbers and significant altered black carp to fish farmers in the hope that state natural reproduction being documented by biologists officials will be more successful than private operators in off-channel and backwater habitats. in preventing the escape and spread of this non-native species. Unfortunately, however, black carp have been Asian Carp Black carp (Mylopharyngodon piceus): The black confirmed in the wild at Horseshoe Lake (2003) near the carp is native to most Pacific drainages of eastern Asia. Upper Mississippi/Ohio river confluence and in the It was first brought to the U.S. in the early 1970’s as a Red River in Louisiana (2004) near the Lower Missis- “contaminant” in imported grass carp stocks delivered sippi/Atchafalaya river confluence. to a fish farm in Arkansas. The species closely resembles the grass carp in appearance, except that the What Can You Do? Become more informed about the gill rakers are fused and hardened (looking almost like spread of non-native species nationwide. Consult your human molars) for use in crushing the shells of local, state, and federal conservation authorities as to mollusks and crustaceans, the black carp’s primary the threat of non-native species in your area, and to the food. A second importation occurred in the early laws and regulations governing the importation, 1980’s; this time for use as a food fish and as a culture, maintenance, and stocking of non-native biological control agent to combat the spread of a species. Utilize care in the purchase and use of baitfish trematode parasite in cultured catfish. The first record in lakes and streams. Ask your bait dealers where their of escapement or release to the wild occurred in baitfish came from, and never release any unused Missouri in 1994 when thirty or more black carp baitfish to the wild; always destroy them or return them escaped into the Osage River in Missouri when high to your bait dealer. Learn and understand the biology water flooded holding ponds at a private aquaculture and needs of aquarium fish species before purchasing facility near Lake of the Ozarks. Black carp are cur- them for your home aquarium. Never release pet fish or Bighead carp (50 lbs) caught in the Cumberland River, rently being used by fish farmers for control of snails, aquatic organisms from the home aquarium to open Tennessee in May 2000. the intermediate waters. Either destroy them, sell or give them to Four species of large Asian carps (grass, bighead, host of a trematode someone else, or return them to the store where silver and black) have been imported into the U.S. for parasite in catfish. purchased for proper disposal. Support stronger local, use in the aquaculture industry, and biologists are Many Mississippi state and federal regulations designed to prevent the raising more and more concerns about their effect on River Basin states spread of non-native species, and let others know of native fish and shellfish when released or escaped to have requested your concerns for the protection of native species and the wild. In fact, in the fall of 1999, fish kills in isolated through the biodiversity. Support your local, state and federal ditches adjacent to the Upper Mississippi River on the Mississippi natural resource agencies in all of their efforts to stop Mark Twain National Wildlife Refuge in southern Interstate Coopera- the spread of non-native species of any kind! Illinois included large numbers (97%) of Asian carps, tive Resource but only one individual each of four native fish species. Association For more information contact: After that incident, reports came in of commercial (MICRA), that the fishermen having to abandon fishing sites on the U.S. Fish and Missouri River because they were catching so many Wildlife Service Asian carps that they found it impossible to raise their regulate the use of nets. The common carp, introduced by European black carp by placing it on the federal list of injurious immigrants in the 1800’s as a food fish, has become so wildlife species under the Lacey Act. Most states feel widespread in the U.S. that in most areas it is consid- that black carp pose a serious threat to native mollusk ered part of the native fauna. The fear is that in time and snail species, many of which are federally listed as the other four Asian carps will become as widely threatened or endangered. Meanwhile, Mississippi, distributed and abundant, wreaking widespread havoc Arkansas, Texas and Missouri permit stocking of with native fish and shellfish habitats and foods. genetically altered and presumably sterile black carp in fish farm ponds. Missouri has also initiated a 5-year Grass carp (Ctenopharyngodon idella): The grass program to supply limited numbers of genetically Revised - 30 April 2004 carp or white amur, native to eastern Asia, was first imported into the U.S. in 1963 to aquaculture facilities in phytoplankton, and invertebrate communities; interfer- lankton, and aquatic insect larvae and adults. Auburn, Alabama and Stuttgart, Arkansas for research ence with the reproduction of other fishes; decreases in Because of it’s feeding habits, the species is a direct in the control of aquatic vegetation. This species refugia for other fishes; modification of preferred fish competitor with the native paddlefish, bigmouth typically inhabits large rivers but can be raised in habitats; enrichment and eutrophication of lakes; buffalo, and gizzard shad; as well as with all larval ponds and rice fields; and large individuals are known disruption of food webs and trophic structure; and and juvenile fishes and native mussels. Some to consume many pounds of aquatic vegetation in a introduction of nonnative parasites and diseases. cultures value the flesh of bighead carp as a source single day. The first release into open waters occurred of food protein and prefer that these fish be kept as a result of escapement from the Fish Farming Bighead carp (Hypophthalmichthys nobilis): Bighead alive until immediately before cooking. Such Experiment Station in Stuttgart. By the mid-1960’s the carp, native to the large rivers of eastern China such as demands are growing, particularly in cities with large Arkansas Game and Fish Commission was raising the the Yangtze, were first brought to the U.S. in 1972 by a ethnic Asian communities. species at a state fish hatchery in Roanoke; and by private fish farmer in Arkansas who wanted to use them 1978 Arkansas biologists had stocked the species in to improve water quality and increase fish production Silver carp (Hypophthalmichthys molitrix): The more than 100 state lakes. Since that time grass carp in culture ponds. By 1974 the species was being silver carp, native to eastern Asia and the Amur and have rapidly spread to evaluated by the Arkansas Game and Fish Commission other lowland rivers of China, was also first brought 45 states through the and Auburn University for its potential biological to the U.S. by an Arkansas fish farmer in 1973, accidental and benefits and impacts. Bighead carp first began to apparently for use in phytoplankton control in intentional, legal and appear in open public waters (i.e. the Ohio and Missis- ponds and as a food fish. By the mid 1970’s, it was illegal release by sippi rivers) in the early 1980’s, likely the result of being raised at six state, federal, and private facilities numerous state and escapement from fish farms and aquaculture facilities. in Arkansas; and by the late 1970’s it had been federal agencies, The species has now been recorded from within, or stocked in 4 municipal sewage lagoons. This deep- private groups and along the borders of, at least 18 states, and is reported bodied, laterally compressed (narrow), very large individuals. Despite to be “piling up” in large numbers below dams on many minnow is similar to the bighead carp, but much efforts to control the Midwestern rivers, more efficient at straining suspended material from spread of grass carp and filling the nets of the water through use of gill rakers that are fused by stocking individu- commercial fishermen into sponge-like als thought to be to the point that nets porous plates. By sterile, this large (50+ can’t be lifted and 1981, the silver carp lbs), elongate, stout- fishing sites have to appeared in Arkan- bodied, blunt-headed, pale gray minnow has estab- be abandoned. The sas’ natural waters lished itself and is reproducing in the wild. Grass carp bighead carp is a at 7 different sites, began to appear in the catches of Arkansas’ commercial very large deep- likely the result of fishermen in the early 1970’s, and by 1976, 25 tons were bodied, somewhat escapement from reported taken statewide. The species has limited laterally compressed aquaculture potential as a gamefish, and as a food fish the flesh is (narrow) fish with a facilities. The silver often said to be tainted with a strong algal flavor. very large head. carp’s history and However, local demand for and acceptance of grass Scales are very tiny, use in Arkansas are carp is reported to be very high in some markets. Grass resembling those of closely intertwined carp are regarded as the most palatable of all of the trout, and the eyes with that of the Asian carps. While introduced to consume trouble- are situated below bighead carp; and some aquatic plants, grass carp have been known to the midline of the due to its feeding clean entire lakes of all aquatic plants, and to then body. Gill rakers are habits, the silver consume organic detritus and animal materials. Nega- long, comblike and close-set allowing the species to carp is also a direct competitor with all native fish tive impacts on native organisms have been summa- strain plankton organisms from the water for food.
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