How long does a Goldfish live?

What is quoted below is from the following site. Gold Fish Lifespan (http://www.tropicalfishdata.com/goldfish/goldfish_lifespan.html)


Like the maximum size, the lifespan of goldfish is also variable. The record is 43 years, but it is uncommon for goldfish to live this long. Goldfish usually live quite long when kept in large aquaria or outdoor ponds, up to 15 to 20 years is not unheard of. In smaller or heated aquaria, a lifespan of five to ten years is quite achievable. As mentioned, the most important factors when keeping goldfish in small aquaria are careful feeding and adequate filtration and/or maintenance.