The life span of betta fish is 2-5 years, but the specific life span depends on the way they are raised and their sex. Generally speaking, as long as they can live in a comfortable environment, their life span is generally about 2-3 years. If the breeding environment meets their requirements and the food and nutrition are sufficient, their life span is generally 3-5 years.

In addition to the environment in which they are raised, the sex of betta fish also affects their longevity. Under normal circumstances, the life span of male fish is longer and that of female fish is shorter. If breeders want betta fish to live longer, they must first ensure their living environment is comfortable, secondly ensure their food and nutrition are adequate, and finally avoid their illness.

Betta usually takes 3-4 months from birth to adulthood, and some of them develop slowly, which takes about 5 months to mature. If breeders can't determine their age, they can also decide by their body length. Under normal circumstances, when their body length reaches 4 cm, they can reproduce. Although they can reproduce as adults, breeders are not advised to let them reproduce immediately. Because they are just adults, all organs are not yet mature, which will affect the quality and quantity of offspring.