The lifespan of betta fish varies widely by species and care conditions. Below is a detailed analysis:
I. Lifespan Comparison of Major Species
Siamese Fighting Fish (Betta splendens)
Typical lifespan: 2–4 years, though peak ornamental quality lasts only about 1 year.
Roughly 80% of individuals have weakened health from fish farm medications (like yellow powder), failing to survive beyond 5 months.
Chinese Betta (Macropodus opercularis)
Average lifespan: 2–3 years; males can reach 3–5 years under ideal conditions.
Captive-bred bettas live significantly longer than wild ones (wild lifespan: only 1–2 years).
II. Key Influencing Factors
Habitat Environment
Maintain water temperature at 24–27°C (for Chinese bettas) or slightly acidic water (for Siamese bettas).
Adding Indian almond leaves to regulate water quality extends their display period.
Routine Care
Change 1/3 of the water weekly and remove bottom debris.
Periodically use a mirror to stimulate bettas and maintain their active demeanor.
Gender Differences
Female bettas generally outlive males by around 6 months.
III. Exceptional Cases
Rare individuals in perfect conditions (large tank + natural diet) may survive 5–9 years, but commercial lifespan claims should be verified carefully. Aging signs like fin discoloration typically appear around 2 years old.