http://www.citizen.o...p_invasion.html - MNR
“Common carp aggressively disrupt habitat, uprooting aquatic vegetation and stirring up sediments that impacts other plants and animals,” says MNR Great Lakes research scientist Tim Johnson. “Many coastal wetlands surrounding the Great Lakes and inland lakes suffer from the presence of carp.”
http://www.dfo-mpo.g...s-especes_e.asp - Fisheries and Oceans Canada
Common Carp, Cyprinus carpio
Common carp are large fish measuring 35-50 cm long, which makes them the biggest members of the minnow family. Common carp are native to the fresh waters of Europe and Asia. These fish were first brought to Canada and the United States in the 1800's because they were thought to be a good fish to eat. Unfortunately, this fish spread rapidly and moved into other areas. Common carp are invasive because they damage shorelines by uprooting plants and muddying the water. This ruins the habitat for other fish and insects.
http://www.invadings...m?A=Page&PID=20 - Joint effort by both the MNR and the OFAH
Invasive Carp
Common carp have predominantly vegetarian diets but will also feed on aquatic invertebrates. Their feeding activity has severe impacts on wetland habitats because they suck up sediments and organisms from the bottom, uproot and destroy vegetation and muddy the water.
http://www.mnr.gov.o...prod_096270.pdf - a MNR draft of proposals for Lake Ontario
Invasive fish species include Alewife, Rainbow Smelt, White Perch, Common Carp, Round Goby, Tubenose Goby, and possibly Sea Lamprey.
And there is many more recent MNR publications that list common carp as a invasive species.
Jim