Mike, several studies have shown carp to be detrimental to other native species. Because of their tendency to root around causing greater turbidity of the water and the fact that they often destroy bedding areas of other native fish such as bass and sunfish, they aren't the most desirable non-native species to inhabit our waters. That being said, they're here to stay, and of course there's no shortage and truth be told, I spent quite a bit of time the last few years throwing nymphs and other flies their way and enjoying every time I had one on. When else do I get forced to play a fish for 15 minutes, see him get into my backing and actually play him off my reel. I enjoyed the video a great deal and if you haven't checked it out, he has a whole video focused on taking those other bronze backs as well.