Wow!
With all due respect, given the number of ecological disasters from the accidental, or purposeful (though misguided) introduction of non-indigenous species of wildlife it takes a certain level of arrogance to state that because
you are unfamiliar with a specific-species disaster story that it could not and would not happen.
That seems to stem from even greater arrogance that we (humans) can do better than Mother Nature...
I am familiar with at least four large mouth bass intros in North America which nearly wiped out resident trout populations....and a few more worldwide that were as much or more catastrophic.
These can be found documented in libraries and the internet....and are part of the teaching curriculum in many Biology programs in leading North American Universities....and there are scores more that I've never heard of....
You should do some research---or just Google some variant of "large mouth bass introduction disaster", before you play so loose and casual with your paycheque....
e.g. :
www.sciencecases.org/nature/nature_notes.asp
