Good longevity data is currently only available for captive salamanders, although an ongoing mark-recapture project on the Jollyville Plateau Salamander should provide substantial data on survival in the wild for that species. A female Barton Springs Salamander was collected as an adult in 1996. She is thought to be the oldest wild-caught salamander in the program, but the exact age is difficult to determine because the hatch date of an adult collected in the wild is unknown. A male that hatched in captivity in 1997 is the oldest captive-raised salamander in the program.