Can 1 goldfish live in gallon tank?

It is generally not recommended to house a goldfish in a 1-gallon tank. Goldfish are relatively active fish that produce a significant amount of waste, and they require adequate swimming space to stay healthy. A 1-gallon tank is too small to provide the necessary space and water volume for a goldfish, and it can lead to health problems and stunted growth.

The minimum recommended tank size for a single goldfish is 10 gallons, and it is best to provide even larger tanks as the goldfish grows. For proper water quality, regular water changes and a good filtration system are also essential.

If you are interested in keeping goldfish, it is important to do your research and provide them with an appropriate environment. Insufficient tank size can compromise the well-being of the fish and shorten its lifespan.