How Long Do Fish Live? Lifespan Guide by Species
Lifespan data for popular freshwater and saltwater fish species
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Editors' Picks
Signs Your Fish Is Sick and What to Do About It
Fish can't tell you when something's wrong. Knowing what to look for can save your fish's life.
Read More →How to Cycle a Fish Tank: The Nitrogen Cycle Explained
The nitrogen cycle is the foundation of a healthy aquarium. Skipping this step is the most common mistake beginners make.
Read More →The 10 Best Beginner Fish for New Aquarists
Not all fish are created equal when it comes to ease of care. These 10 species are perfect for beginners.
Read More →Our Aquatic Expert Review Process
Our review team is made up of aquatic biologists, ichthyologists, and experienced fish keepers who examine our content for accuracy and reliability to ensure it reflects the most up-to-date information on fish care.
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Dr. Sarah Reeves
Aquatic Biologist
Dr. James Holt
Marine Ichthyologist
Dr. Priya Nair
Veterinary Aquatics
Carlos Mendes
Master Aquarist
Fish Care Essentials
How to Quarantine New Fish Before Adding Them to Your Tank
Quarantining new fish is one of the most effective things you can do to protect your existing tank from disease and parasites.
Read More →How Often Should You Change Aquarium Water?
Water changes are the backbone of fish care. Too few and toxins build up. Too many and you stress your fish unnecessarily.
Read More →Aquarium Water Parameters: pH, Hardness, and Temperature Explained
Water chemistry sounds intimidating, but it boils down to a few key values you can easily test and adjust.
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