🐠 How Long Do Pet Fish Live?

Many new and experienced hobbyists wonder: “How long will my fish live?” The answer depends on the species, care, tank size, water quality, and diet. Proper care can mean the difference between just a few months or many years of enjoyment.

⏳ Average Lifespans by Type

• 🥇 Goldfish: 10–20 years (some live over 30 with excellent care)
• 🐟 Betta Fish: 2–5 years
• 🧡 Guppies, Mollies, Platys: 2–4 years
• 🌈 Tetras, Rasboras: 3–6 years
• 💙 Cichlids: 5–15 years (depends on species)
• ⚫ Plecos (common species): 10–15 years; some large species 20+
• 🐉 Monster Fish (Arowana, Pacu, Catfish, etc.): 10–30 years or more, depending on tank size and care
• 🐊 Australian Lungfish: Can live 100+ years, one of the longest-lived freshwater fish

🧪 Factors That Influence Lifespan

• 💧 Water Quality – Stable, clean water extends life dramatically.
• 🍽️ Diet & Nutrition – A balanced diet reduces disease and boosts longevity.
• 🏠 Tank Size & Space – Overcrowding shortens lifespan due to stress and toxins.
• ⚡ Stress Levels – Avoid aggressive tank mates and sudden changes.
• 👨‍⚕️ Healthcare – Treating illness early with proper medication is vital.

🌱 Captive vs. Wild

Fish born in captivity often live longer than wild-caught because they’re adapted to aquarium conditions. Wild-caught species sometimes need special water parameters to thrive.

📌 Key Takeaway

Pet fish can live from just 2 years up to over 100 years depending on the species and your care. A little research before purchase goes a long way in ensuring your fish live a long, healthy life.