The other thing of note is that people assume once it has grown too large for their system, or has out worn its' welcome, that they can just release it back to the bay / gulf.
This is extremely dangerous since that vast majority of what is in our tanks, excluding 'Galveston' biotope tanks, is non native. Releasing anything at all has a huge risk of introducing an invasive species or disease that local populations have no defense to.
The rule of thumb is once it is inside the tank or system, it can never be released into the wild.
Just another consideration.