Like many anglers I think it's pretty cool that I can go out on the river here and have a chance of catching muskie. However they are an invasive species, and they are spreading south. I suspect in a handful of years they will be throughout the entire St. John river system.
What I don't understand is why there is not an uproar against these fish? They are a top level predator, with no natural enemies. Nothing to control their population except us anglers... and the majority of the serious musky anglers seem to be practicing catch and release. (although I could easily be wrong here).
Look at the uproar of asian carp getting into the great lakes. Or smallmouth getting into the miramichi river system. Is the problem with these two examples only because of money? (i.e. the fishing industry in the great lakes and the salmon industry (tourism, etc) in the Miramichi?
Personally I'd love to have salmon and trout improve in the St John system, but that seems even less likely with the introduction of these top predators. What about the sturgeon in the river? There is almost nowhere else on the east coast of North America with such a strong sturgeon population, but it is mostly isolated to this one river system. Will they eat young sturgeon?
I'm really not advocating the removal of muskie. I think it's too late for that now anyway. I just think it interesting that this invasive species seems almost welcomed.