How long do pet goldfish live?

According to The Nest, pet goldfish usually live between five and 10 years. Under perfect conditions or in the wild, goldfish are known to live 25 years.

A goldfish's lifespan can be maximized by keeping it in ideal conditions for its species. Goldfish prefer temperatures around 65 to 68 degrees Fahrenheit. They thrive in large tanks, preferring a minimum of 20 gallons per 35 ounces of goldfish. A diet of high-quality flake food supplemented with daphnia, freeze-dried foods and vegetable matter is the healthiest choice for pet goldfish and lets them grow properly. The oldest recorded pet goldfish lived 43 years.