The expected lifespan of guppies usually ranges from one to two years. Under artificial rearing conditions, the average lifespan of guppies is one to two years, and they can live up to around two and a half years at most. Guppies have a relatively short lifespan, but they possess a strong reproductive ability and can continuously sustain their population in an aquarium.
The factors that affect the lifespan of guppies include the rearing environment and genetic factors. Guppies are highly adaptable and prefer to live in slightly alkaline water with a temperature of 22 - 24°C and a pH value of 7.2 - 7.4. They also require ample aquatic plants and food. If the rearing environment is suitable, the lifespan of guppies may be a bit longer. In addition, the physical condition and genetic background of guppies can also influence their lifespan. Some guppies with a weaker constitution or genetic defects may have a shorter lifespan.
To extend the lifespan of guppies, it is recommended to provide a suitable growth environment and good rearing management. Keeping the water clean, maintaining an appropriate temperature, and providing abundant aquatic plants and food are crucial. Meanwhile, avoid using medications to treat the fry to reduce the negative impacts on the fish bodies.