I was at my lfs today and they had two types of puffer fish, a figure 8 puffer and a "Freshwater puffer fish". upon doing research, I found three different types of puffer fish that were listed as fresh water fish, the figure 8, the dwarf puffer, and the green spotted puffer. I was under the impression that puffers required brackish water. SO can someone tell me which, if any would be able to live happily in freshwater?