File:Punctum pygmaeum shell.jpg
There is  very little information on how the P. minutissimum reproduces, but there is information on its sister species the Punctum pygmaeum, which is thought to have very similar reproduction to P. minutissimum.  All of the following information is on P. pygmaeum coming from (Schultes, 2011).  These snails are hermaphrodites. Sexual reproduction can take place with two individuals or just one.  Eggs are large in comparison to the parent (one third to half of the size) and it often takes 1 to 2 days to lay the egg.  Their incubation period is between 1 to 34 days.  Snails have direct lifecycles.  Once the snails hatch they grow to sexual maturity quickly.  Once they reach sexual maturity they continue to grow but at a much slower rate.  Snails usually live on average 200 days.