We need a member from Florida to catch a couple from the wild, Great sirens. I don't think you can find them in North Alabama but I will check into it.
if i were you i'd go for a gar, what are your tanks dimensions?? if its big enough, you could get the lepisteoss osseus. long nose gar. they kick ass!!
Are you looking for 'TRUE' Candiru. The parasitic cetopsis sp.? I can get em.. I also can get the other 'Candiru' aka Ituglanis Amazonicus.
Last time I imported the amazonicus, they went 'parasitic' on the group of catfish that was next door to them. They weazled through the divider and ate them all out from the inside. I watched one enter one gill plate, and exit the other.