You can get a permit for brigs. Spixis, columbian ramshorns, and canas I know are illegal to ship. Other plant eating apple snail species are as well I believe, but I would have to look it up. I have applied 3 times for permits for spixis and columbians and have been denied as they are illegal to ship.
That was what I had heard all other snails they are not requiring permits. I know I have some snails coming my way from over seas and if they were illegal then customs would not even let them in the states.
I probably could've worded my previous post better. What I meant was, that Pomacea bridgesii seems to be the only snail that can be legally shipped across state lines AND requires a permit to do so. Other snails can be legally shipped (MTS, Ramshorns, Nerites, etc) don't require any permits.
And don't bother applying for permits for Spixis, Columbians, etc any longer. I doubt they'd lift the ban on other Apple Snails since they can do environmental damage if released into the wild.
I'm sure there are breeders in CT as well, I think these snails are too popular for there not to be any.