With this fish I feel a little like the people that wait a while to tell people they're pregnant, in case something happens... I've just acclimated and added a Stars and Stripes puffer to my high end brackish tank. The SG is around 1.011, with 1.010 being the minimum for these fish. I plan on continually raising it with each water change. The fish is about 4" long I'd guess... Enjoy, and if I never speak of the fish again, just don't ask (I'm nervous)...