How many years do aquarium tropical fish live?

It's impossible to give a single answer to how long aquarium tropical fish live. The lifespan of a tropical fish depends on several factors, including:

* Species: Different fish species have vastly different lifespans. Some, like guppies, only live for a few years, while others, like goldfish, can live for decades.

* Water quality: Clean, properly-maintained water is crucial for fish health and longevity. Poor water quality can lead to illness and shortened lifespans.

* Diet: A balanced and nutritious diet is vital for healthy growth and lifespan.

* Tank size: A cramped tank can stress fish and shorten their lives.

* Stress levels: Stressful environments, such as overcrowding, improper water conditions, or aggressive tank mates, can impact lifespan.

* Genetics: Some fish are simply more prone to certain health issues or have shorter lifespans due to their genetics.

Here are some examples of typical lifespans for common aquarium tropical fish:

* Guppies: 2-5 years

* Neon Tetras: 3-5 years

* Angelfish: 10-15 years

* Discus: 10-15 years

* Goldfish: 10-20+ years (depending on species and care)

It's important to research the specific needs of any fish you're considering for your aquarium to ensure you can provide them with the best possible environment for a long and healthy life.