Answer by  
                                                                                          dracon420 (249)
                                                            
                          
                          
                                                          In dropsy, a concentration of fluid in the body tissues and cavities causes the fish's abdomen to become swollen and appear bloated. Fish may also stop feeding, appear off-color, become listless and/or lethargic, have sunken eyes, and hang at the top or stay at the bottom of the aquarium.