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Barton Springs Salamander (Eurycea sosorum)

photo by Ryan Hagerty/USFWS

Common Name: Barton Springs Salamander
Scientific Name: Eurycea sosorum
Family: Plethodontidae – Lungless Salamander family
Locations: United States – Texas
Size: 2.5 inches (6.4 cm)

The Barton Springs Salamander is a federally endangered species and listed by the International Union for the Conservation of Nature (IUCN) Red List as Vulnerable to Extinction. They were thought to be found only in the outflows of the Barton Springs in Austin, Texas but a population has been found near Drippings Spring. They are listed due to their small habitat that is sensitive to environmental pollutants. There is a popular naturalistic swimming pool in the Barton Springs that houses the salamanders. While swimming in the water is said not to bother the salamanders, the cleaning of the pool can kill them. The Austin Blind Salamander (Eurycea waterlooensis), another endangered salamander, also lives in the Barton Springs.

Like all members of the family Plethodontidae, the Barton Springs Salamander has no lungs. Unlike most members of the family, the salamander is neotenic and keeps its larval characteristics, most notably, the gills. They are a fully aquatic species of salamander, never leaving the water. The salamanders are found usually under rocks or buried down in the gravel, from several inches to 15 feet deep!

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