How long does a black worms live?

The lifespan of blackworms (also called sludge worms or tubifex worms) is typically around 2 to 3 months, although they can live longer under ideal conditions. Blackworms are small, aquatic worms that are commonly used as fish food and compost. They thrive in environments with high levels of organic matter and low oxygen content, and they are known to be very resilient. However, their lifespan can be shortened by a number of factors, including fluctuations in water temperature, the presence of predators, and changes in water chemistry.