How often do you want to replace your goldfish? How long do you believe a goldfish should live?
Goldfish on average should live to be 10 years old, or even older. The oldest living goldfish lived more than 43 years. If you take the time to learn about goldfish diseases and proper care, your fish can live to reach old age, and provide you with magnificent fish for many years.
The starting point in any discussion of goldfish diseases needs to start with prevention. Goldfish are extremely hardy, resilient fish. When properly cared for they rarely become ill. Proper care requires changing water regularly. Replacing 20 to 30 percent of the water in your tank is recommended every week. Using a good filtration system with an activated carbon filter is a necessity. Make sure to only feed your goldfish the food they will eat in about 5 to 10 minutes. Overfeeding leads to bad tank conditions, and sick fish. These few items will help eliminate most risk.
One important note, fancy tailed goldfish are more prone to illness than other goldfish. This is not recommending you stay away from them, but you must be more observant, and act much quicker with these variety of fish.
Bacterial infections top the list of common goldfish diseases. These can include dropsy, tail rot, fin rot, and even ulcers on the body. These types of infections are almost always tied to human factors. Water quality, improper diets, too many fish for the area, or water temperature all play an important role to the onset of bacterial infections. The first step in treatment will be removing the initial problem. Once our fish is in a clean environment, then salt treatments, medicated foods, medicated water drops, and other solutions can quickly reverse the illness if caught in the early stages.
Cloudy eye is one of the most noticeable goldfish diseases. Where the eyes are normally a deep rich color, they being to be clouded with grey or white. Most commonly this is caused by dirty water. Giving the fish fresh, clean water and then maintaining the tank properly will normally clear the condition. If it persists, then consult with your pet supply store, they will have medications to add to the water to help accelerate clearing up the issue.
The fish fungus is another one of the often seen goldfish diseases. Normally you will not see a fungus attack unless the fish already has ulcers or another health issue. The fungus will attack the open sore, and you will begin to see what appears to be cotton growing on their skin. Once again, this is all tied back to water quality. Get the water quality corrected, then consult your pet store. Simple medications are available which will quickly clear up the fungus and help your fish recover.
As you can see, the recurring theme in most goldfish diseases is water quality. This is only a small sample of illnesses which can affect your fish, but if you take care of the tank or pond properly almost all diseases can be avoided. Instead of battling disease when it occurs, take the time to prevent it with proper care.