The females can lay eggs throughout the year. A female can lay around 100 oval eggs in batches of as few as 2 - 3 in crevices and under objects.
The eggs are smooth and white when first laid, but turn wrinkled and brown after a while. The eggs hatch in around 2 weeks and reach maturity in just 3 months, but will not hatch unless humidity is at least 50%.
For the first few months, or until the third moult the silvery scales are absent.
Silverfish are able to re-grow legs etc. which have been lost as they moult throughout their lives. They can live for over 3 years.
The males must perform a dance for the female, then he deposits a spermatophore on the ground. Then he attaches signal threads leading from it to guide the female to its whereabouts.
Although some species are parthenogenic.