What you say about naturalization is true, but they are still invasive. Same goes for round gobies, Eurasian milfoil, curly leaf pond weed, alewife, zebra/quagga mussels, and a host of other non endemic plants and animals. We're lucky in that for the short term, some invasives have actually improved the fishery. In some ways Giant hogweed hasn't been the scourge as was predicted, but it still isn't what you want to run into on a hike. Same goes for carp most days. That some of us (as anglers) have adapted and decided to fish for them is more about making the best out of the situation - much like the snakeheads down south. Turns out fishzilla isn't ruining the bass populations as was once feared. Interesting to note that salmon (king, coho) and trout (brown, rainbow/steelhead) are non endemic and intentionally introduced to control invasive alewife populations in the Great Lakes. In the overall fisheries picture from a management perspective, bureaucracies place greater value on these salmonoid species than our native bass. This probably is due to the economic influence trout fishing has over bass and panfish.
