Whats Drospy?!
Answers: Just wondering...................
Edema is the modern word for Dropsy. Here are links on both words....
http://en.wikipedia.org/wiki/Dropsy
http://www.healthline.com/search?q1=caus...
It is an ailment that aquarium fish get.
Do you mean dropsy? If so, it's an unusual accumulation of fluid in the body (usually the ankles & around the heart) due to congestive heart disease.
AKA edema