What is the lifespan of a goldfish?

The lifespan of a goldfish varies depending on the species and the conditions in which it is kept. In general, goldfish can live for 10-20 years, although some goldfish have been known to live for up to 30 years.

The following factors can affect the lifespan of a goldfish:

* Species: Some species of goldfish, such as the common goldfish and the comet goldfish, have a shorter lifespan than other species, such as the shubunkin goldfish and the fantail goldfish.

* Water quality: Goldfish need clean water in order to stay healthy. Poor water quality can lead to stress, disease, and a shortened lifespan.

* Diet: Goldfish need a healthy diet in order to stay healthy. A diet that is too high in protein or fat can lead to health problems and a shortened lifespan.

* Temperature: Goldfish prefer water temperatures between 68-74 degrees Fahrenheit. Temperatures that are too high or too low can stress goldfish and lead to health problems.

* Stress: Stress can take a toll on a goldfish's health and lead to a shortened lifespan. Stress can be caused by a number of factors, such as overcrowding, changes in water temperature or pH, and harassment from other fish.

By providing your goldfish with clean water, a healthy diet, the correct temperature, and a stress-free environment, you can help your goldfish live a long and healthy life.