Understanding the signs and symptoms of a sick goldfish are important to allow treatment before it is too late. It may be difficult to determine the exact cause of the illness, but depending on the symptoms, it is possible that minor changes to the environment can make a world of difference.
Regularly monitoring goldfish is the best way of catching an illness before it gets to a point where it becomes deadly. It is easy to spot changes in behaviors and eating habits that are sure signs of problems.
Keeping the fish tank clean and the temperature regulated is one way to help prevent disease. It is easier to prevent an illness than to actually treat the illness.
A dirty tank can produce toxins that cause infections in goldfish. The sick goldfish may get black spots when the infection begins to heal. Swim bladder problems cause a goldfish to float to the top of the tank. The problem is generally caused by overfeeding. It can be genetic, but diet is usually the culprit. It may be necessary to move the fish to a separate tank and reduce feeding to remedy the problem.
When the fish are staying to the bottom of tank, this is a serious sign of a sick goldfish. Hugging the bottom of the tank is a sign that the goldfish may be close to death. The reason could be a bacterial infection or parasites.
Cleaning the water in the tank may help, but generally, when the goldfish are so sick they are gravitating to the bottom of the tank, it is sometimes too late. It is recommended to add a small amount of salt to the tank. This could help kill the parasites, but this still may not be able to save the goldfish.
Ich is another disease that causes sick goldfish. It is noticeable to fish owners as it causes white spots all over the goldfish. The white spots are parasites and can spread quite rapidly. Owners may also notice cloudy eyes and breathing issues in the goldfish.
The goldfish also tend to try to scratch on the side of the tank or on gravel. The ich is usually caused from stress due to poor water temperatures and conditions. The ich must be treated with medication. The tank must be treated for over a week to be sure all the parasites are killed.