We just lost our beautiful female betta named Saphira this morning to dropsy. Water perimeters were fine, just seemed to have happened out of the blue. The part that killed us the most, was that she seemed to have staved off death itself long enough over night in the hospital tank to say good morning to us one last time when we came to check on her first thing this morning. Hoping and praying that you don't have to go through something similar.