1) Salinity-1.03
2) 75gallons. All other fish are normal. Juvenile French Angelfish, Juvenile Blue Surgeonfish, Juvenile Parrotfish, Juvenile Rosy Blennie.
3) in the morning algae, at night shrimp. once a month water change.
4) 3 weeks ago we put in new live rock and did a thorough algae debridement.
5)More than 5 years? I don't remember.
Here are pictures of the puffer:



This is what sharpnose usually look like:
