The Kings River pyrg is a small springsnail found in 13 isolated springs within a 14-mile radius in Thacker Pass and the Montana Mountains in Humboldt County, Nevada.
Springsnails are just millimeters in length (think: the tip of a ball point pen), yet they play an important role in their habitat as primary consumers, eating algae and maintaining water quality. As their name suggests, springsnails live primarily in springs, but can also be found in streams and seeps across the West. Many species of springsnail are highly endemic, meaning they are often found in only a single spring or cluster of springs. They are also closely tied to the water quality and chemistry of the spring source.