Everything about Fish Dropsy totally explained
Dropsy is a common disease among
fresh-water aquarium fish. The name is from an old name for
Edema in humans.
Symptoms
This disease is characterised by a swollen or hollow abdomen (
Ascites). A concentration of fluid in the body tissues and cavities causes the fish's abdomen to become swollen and appear bloated. Swollen areas may exhibit a 'pine-cone' appearance caused by the fish's scales sticking out. You can best see this by viewing your fish from the top. Fish may also stop feeding, appear off-colour, become listless and/or lethargic, have sunken eyes, and hang at the top or stay at the bottom of the aquarium.
The condition affects the fish's internal organs, ceasing proper function.
Gouramies,
Cyprinids (barbs, danios, etc),
guppies,
betta and
goldfish are prone to this disease.
Causes
Dropsy is fairly easy to diagnose non-specifically, however, it's much harder to diagnose the cause. The main cause is bacterial infection. The causative agent may be introduced through food or dirty water. Edema second to
kidney failure or ascites due to
liver or
heart failure are other possible causes.
Treatment
Dropsy isn't very contagious; however, if a fish is diagnosed with dropsy, it's important to remove it from the aquarium as soon as possible. If there are multiple fish, treat the afflicted fish in a specially established "sick tank" (
Quarantine). Dropsy can spread from the ill fish, possibly causing stress among the other fish in the tank community. This extra stress may make the others vulnerable to dropsy or other forms of disease.
Treatment may consist of
antibiotics targeting the causative agent. They work best in the very early stages of dropsy. A more hands-on approach is to raise the aquarium's temperature a few degrees - slightly higher than usual. Adding
Epsom salts (Magnesium sulfate) to the water at (a rate of 20 mg/L) helps to encourage the fish to expel unnecessary damaging fluids.
Prognosis
Prognosis of fish dropsy isn't good. By the time fish has swollen up enough that the scales begin to raise, the internal damage may be too extensive to repair. Most cases of dropsy are fatal. However, if the fish is placed in a quarantine tank and treated with a broad spectrum antibiotic or a
bacterial remedy from any aquatic sales shop, then the fish can make a full recovery in less than a week.
Prevention
Maintaining water quality is always extremely important. It should always be checked first, because it's often the cause of disease in aquarium fish. Frequent water changes can work to prevent the spread of disease by "watering down" the concentration of disease agents, and by reducing stress on the tank occupants.
All tanks need a 10-25% water change on a weekly basis. The best method of changing water is siphoning the water from the bottom, removing debris and fecal matter from the gravel.
Always feed fish from reliable sources and use high quality food. Varying diet is also important.
Further Information
Get more info on 'Fish Dropsy'.
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