1 to 2 years
The lifespan of neon tetra fish (also known as neon cardinal fish or red neon fish) is usually 1 to 2 years, which is a consensus from multiple sources. The following is a detailed analysis:
1. Lifespan range
Most small tetra fish (with a body length of less than 5 centimeters) have a relatively short lifespan, generally ranging from 1 to 3 years. Neon tetra fish belong to the category of small fish, and their lifespan mainly falls within the range of 1 to 2 years.
Authoritative sources such as Baidu Baike also mention that their lifespan is 1 to 2 years, which is consistent with breeding practices.
2. Key factors affecting lifespan
Water quality requirements: They need weak acidic soft water (pH 5.0 - 7.0), and the water temperature should be maintained at 22 - 26°C (the best is 24°C), and drastic fluctuations should be avoided.
Stocking density: They like to live in groups. It is recommended to keep them in groups to reduce stress. Keeping them alone may shorten their lifespan.
Bait selection: They are omnivorous and can be fed with daphnia, bloodworms, or high-quality artificial feed. A balanced diet contributes to their health.
3. Precautions for extending lifespan
Stable environment: Reduce the frequency of water changes. Each time, the amount of water changed should not exceed one-fifth to avoid sudden changes in water quality.
Care during the breeding period: During breeding, extremely soft water (pH 5.6 - 6.5) is required, and the fry stage requires special care. Otherwise, the survival rate will be low.
Summary: Neon tetra fish have a relatively short lifespan. However, by controlling the water quality, temperature, and bait, their lifespan can be maximized. If you want to keep tetra fish with a longer lifespan, you can consider medium to large-sized varieties (such as cardinal tetra fish).