The average lifespan of betta fish varies significantly depending on their species and care conditions. Details are as follows:
1. Lifespan Differences by Species
Siamese Fighting Fish (Betta splendens)
In the wild, their lifespan can reach 4–5 years; under artificial care, it typically ranges from 2–4 years.
Their peak ornamental period (when colors and vitality are most vibrant) only lasts about 1 year. After that, their body color fades and energy levels gradually decline.
Chinese Betta Fish
The average lifespan is 2–3 years, but it can be extended to 5 years under high-quality care conditions.
Genetic differences lead to notable lifespan variations:
Blue-morph varieties age more quickly.
Albino varieties have shorter lifespans.
Wild common-forktail varieties (e.g., those from Jingxi region) can live for over 5 years.
2. Key Influencing Factors
Care Environment
Maintaining a stable water temperature of 22–24°C and consistent water quality can significantly extend their lifespan.
Keeping bettas alone (solitary housing) is better than mixed housing, as it avoids energy loss from territorial fights.
Gender Differences
Male bettas generally live longer than females, with males able to reach 3–5 years of age.
Summary
Under standard care conditions, the average lifespan of betta fish is 2–3 years. With optimized care (e.g., stable water parameters and solitary housing), some individuals can live beyond 5 years.