1. Bluefin killifish (Lucania goodei)
2. Everglades pygmy sunfish (Elassoma evergladei)
3. Least livebearer (Heterandria formosa)
I'm sure about these id's. I'm a fish biology student at the University of Alabama, and my genetic work includes studies of each of these species. In my opinion, these small native fish are some of the most interesting fish you can keep. The pygmy sunfish should interest anyone who likes to feed live food to their fish. The pygmy sunfish are like miniature groupers, that stalk daphnia and quickly gulp them down. Pure miniature predators. They also are territorial and will establish a hierarchy like cichlids, but you can keep them in a five gallon tank with no heater or filter. The range of this species is from southern NC to southern AL, and includes even the southern tip of Florida (even though some of the books say they don't get that far south).