Lifespan of Aquarium Fish

How long will your fish live? It's hard to know since they don't have hair to turn grey. To top it off most fish lie about their age. Although I haven't been able to get any of my fish to fess up their true ages, fish have been studied long enough for us to know a bit about their natural lifespan.

For instance, did you know that the two most popular species of fish, Bettas and Goldfish are at opposite ends of the spectrum? Bettas live only a few years, while Goldfish live for decades. So how long will your fish live? This reference will give you a good idea of the expected lifespan of popular aquarium fish.