They're very destructive in wetland habitat, which is really rough on things like pike. There are a number of native....
If you go into Hamilton harbour, Burlington Bay, that area, they've invested huge amounts of money in getting the carp out of this area, called Cootes Paradise, simply to bring back some of the native fish population. The carp were destroying it.
Nonetheless, yes, they're a bottom feeder. They stir things up. That's how they do their damage. It's a very different thing.
It's important to keep in mind that although we talk about silver carp and bighead carp as if they're the only Asian carp species at the border, there are two more that actually do feed on the bottom. One is grass carp and the other is black carp, which is a mussel eater. There's a lot of hemming and hawing about whether these things would eat zebra mussels because they specialize in eating molluscs, but Lord, if it turns out they like zebra mussels and they get into the Great Lakes, I mean, we're going to have to do some market development.