Maybe the media inaccuracies are whiplash from the snakehead episode earlier this year. The impact common carp can have on native fish is largely determined by the size of the water they're in. They're going to go wherever water is, just like any other fish, and if they get into little lakes or ponds via tributaries then I suppose they'll be competing for some of the naturals and eating some eggs and fry, again just like any other fish. Two years of flooding in Saskatchewan and they've found common carp farther north than ever before so the province has a tv ad urging people to report any invasive species, featuring a pic of a dead common, with no real information, but implying how terrible they are. The stupid p***ks even spent my tax money producing it. What keeps carp numbers in check are food fishers and pelicans. Oh, and floods like we had - the pelicans and foxes and coyotes had a buffet all summer with carp and buffalo fish stranded in the fields.