Marine Warehouse--located on hillsborough ave. They recently renovated and that store has lots of starter plants. There focus is saltwater but they do have lots of stuff for freshwater.
Everglades exotic plants (aquaticplantdepot.com)--they are right by vandenberg airport. Huge selection of aquatic plants. Nothing exotic though--however they do order from Florida Aquatic Nurseries.
Fish World--located on waters ave. there plants are rather expensive but they have lots of fish to choose from. I got my bumblebee goby from them and its my favorite fish. I believe they get fish from Segrest Farms.
Aquarium Creations--located off Brandon blvd. They only have a couple plants but even though there focus is saltwater, they seem to have neat fauna. Recently I picked up some orange bee shrimp, cherries, and amano shrimp. One day they even had Boraras brigittae. They do order from Segrest Farms.
BTW Segrest Farms is open to hobbyists for tours and is off I-75 at the big bend road exit. I suppose if they had really neat fish that you wanted, you could go there, take notes, and then go to a local pet shop and have them ordered. The other night I looked through their catalog on there site and they have some neat shrimp!
www.segrestfarms.com