The US and most other countries have a banned list. We here in australia have a non banned list. If it aint on the list we cant import it. But bichirs, giant gouramies, big catfish and some other stuff is "legal" as long as they where here before the new laws came in or where born here. Alot of stuff is still brought in but it is usually very expensive.
If any other Aussies are interested i know a shop on NSW central coast who sells senegals for 200 RTC for 500, Asian arowanna for 500, clown knifes for 150, and gars (gator i think although since they are the only gars ive ever seen im not sure) for 300 - 500 i cant remember. Plus other various oddballs, i got a ARTC for 200. Ive been trying to get a snakehead but they wont get me one.