Average Lifespan of Betta Fish
General Range
In most cases, the average lifespan of betta fish is 2–3 years.
Male bettas typically live longer, reaching 3–5 years, while females have a slightly shorter lifespan, around 2–3 years.
Exceptional Cases
Under ideal living conditions—such as stable water quality, appropriate temperatures, and a varied diet—some individuals can live 4–6 years. There are even rare recorded cases of bettas surviving up to 8 years.
Influencing Factors
Living Environment: Water temperature should be kept stable at 24–27°C (75–81°F), with a pH level of 6.5–7.2. Regular water cleaning is essential.
Gender Differences: Males generally outlive females, as they do not participate in breeding.
Impact of Breeding: Females may experience a shortened lifespan after mating.
Lifespan Variations in Practical Care
Bettas purchased from pet stores are usually around 1 year old (males) or 6 months old (females), so their remaining lifespan in home aquariums may only be 1–2 years.
In the wild, their lifespan is even shorter, averaging 1–2 years.
In summary, the lifespan of bettas is influenced by multiple factors, and scientific care can significantly extend their survival time.