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Fish Age Calculator
Convert your fish's age into human years using a species-specific formula. Lifespan varies dramatically — guppies live 2-3 years while koi can reach 35+ years.
Enter your fish's birth date and species to see its age in human years.
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How to Use This Calculator
- Enter your fish's date of birth (or estimate)
- Select the species
- Click Calculate to see human-equivalent age and life expectancy
Frequently Asked Questions
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