I think banning fish because of a few is just laziness. It’s the equivalent of a school teacher punishing the entire class because one kid does something and the teacher doesn’t know which kid.
I think instead of banning fish etc…just make the punishment if you’re caught releasing a non native species so over the top ridiculously extreme that nobody would risk it.
Of course it could be characterized as laziness...but it might be more accurate to call it an overabundance of caution. Who cares how extreme the punishment is for the crime of introducing a potentially devastating invasive is? There is always someone who will do it, either for the thrill of flouting authority, or out of ignorance of the danger and of the law, or even entirely by accident. After it occurs, punishment or not...that genie is not going back into that bottle.
It's generally accepted that capital punishment is not an effective deterrent for preventing the crime of murder. Considering that...imagine the worst possible penalty for an environmental crime, and then tell me that it will be an effective deterrent for that.
I'm as guilty as most here of being saddened by legislation that cramps my style when it comes to choosing species of fish I can keep...and I am at least as cautious and wary of governmental over-reach as anybody. I find myself smirking and rolling my eyes when the government rolls out bans so extreme that they are comparable to killing a fly with a sledgehammer...I react that way to a lot of government moves.
But, when the fly really, really needs killing...i.e. when the chance of an invasive introduction is even a remote possibility...I'd much rather see the overkill. Better too much than not enough.
There really isn’t a solution, but placing the blame on the keepers isn’t accurate. The majority of the problems in FL are because of a hurricane causing many fish and reptiles to escape. But really IMO, when human’s started traveling the globe, that’s what did a lot of the damage, there was always going to be hitchhikers. Maybe it’s not an ecosystem being destroyed, maybe it’s an ecosystem evolving into something different. Outside influences have always effected eco systems. That’s my take anyway.
Hitchhikers have always been a problem; look at rats colonizing the world via ship; look at things like the Spiny Water Flea in the Great lakes, getting there in the ballast water of ships. So of course, restrictions have tightened in an effort to combat such modes of introduction.
A hurricane releasing exotics in Florida is not natural selection; those critters wouldn't have been there to be released in the first place if keepers hadn't had them...and the ecosystem there is not "evolving"; it's being influenced in un-natural ways and directions by people.
Just sitting back and saying "S**t happens!" simply can't be accepted when we have created the set of circumstances that allows that s**t to happen.
No solution? Maybe not for combating existing infestations of exotics...but that's no excuse for not trying to prevent making the same mistakes over and over again.