I just bought a green spotted puffer fish? I had no idea...?

[carexxbear315]

That the green spotted puffer needs to be in brackish water. The woman who sold it to me did not tell me this, and instead made me think this was a happy friendly fresh water fish. Well I honestly am not very good at keeping "high maintenance" fish alive. I couldn't keep angel fish alive because they need a certain ph. So what I need to know really is can my fish be kept in a fresh water tank. (10-20 gal) He is in solitary confinement because I started researching puffers and I read that they aren't the best fish to keep with tank mates. Ok, so I need to know if this little guy can just survive in fresh water with a lot of plants and rocks. And if I can treat him like a basic... goldfish and enjoy him simply, and feed him flakes. etc... Please blowfish lovers don't be harsh. I was mislead in my purchase.

[Mom]

Spotted Puffer
An attractive aquarium oddity, the Spotted Puffer, Tetraodon nigroviridis, is attractive, active, and amiable (in appearance.) This friendly-appearing fish should be kept only with semi-aggressive or aggressive fish. It may likely nip the fins or slower moving or more timid aquarium mates. Considered a brackish water fish, this Indonesian native does fine in freshwater as a juvenile, but should be kept in brackish water for longevity of health. As with other Puffers, it should not be kept with smaller snails, crustaceans, and mollusks, as these compose a large portion of its natural diet. Bloodworms and blackworms (in addition to a high quality pellet food) will help sate the appetite of this eager eater. Hard, alkaline water in the 76-82° F range is ideal.