I could be wrong but I don't think TWRA lists any restrictions on the sale/bartering/swap of corals and aquarium fish here. I had to do a lot of research on what I could and couldn't legally sell when I started breeding snakes and can't remember seeing anything restricting corals and fish here. TWRA is, however, very restrictive when the animal/fish/plant life in question is a native species or closely related to native species.