<b>Data:</b> Long-term sperm storage in a superfetatious live-bearing fish (<i>Poeciliopsis gracilis</i>, Poeciliidae)

<br>We tracked the offspring per brood and time between broods for 55 female porthole livebearers (<i>Poeciliopsis gracilis</i>) over a 9 month period to determine sperm retention time in females isolated from males. From our 55 fish, 27 were left isolated from males while the other 28 were paired with a male for breeding after 2.5 months of sexual isolation.<br>This data set contains the raw data for the offspring per brood and time between broods. The included .html file contains the metadata for all the data files. This dataset is linked to the paper of the same name published in Ecology &amp; Evolution (https://doi.org/10.1002/ece3.72086). All associated code, analyses, and additional supplemental appendices can be found at 10.6084/m9.figshare.24032109.