Pacific Southwest Region
California, Nevada and Klamath Basin

Thermophilic Ostracod Does Not Warrant Protection Under the Endangered Species Act

Feb 16, 2012

For Immediate Release:
Date: February 16, 2012       

Contact: Trisha Roninger, (541) 885-8481   

Thermophilic Ostracod Does Not Warrant Protection Under the Endangered Species Act

KLAMATH FALLS, OR -- The U.S. Fish and Wildlife Service today announced that a petition to list the thermophilic ostracod, (Potamocypris hunteri) does not present substantial information indicating that the ostracod warrants federal protection as a threatened or endangered species under the Endangered Species Act (Act).  Thermophillic ostracods are small shrimp-like animals that live in hot springs.  The ostracod Potamocypris hunteri, is found at Hunter’s Hot Springs in Lakeview, Oregon and possibly throughout the Great Basin and eastern Oregon. 

Today’s decision, known as a 90-day finding, is based on scientific information received in a petition to protect the ostracod under the Act, as well as other scientific information available to the Service. 

Petitioned entities must meet the Act’s definition of a species before they can be considered for listing under the Act.  Based on the information presented in the petition and available in the Service’s files, there is a considerable amount of uncertainty regarding distribution and taxonomy of the petitioned ostracod.  Therefore, the Service determined that the petition did not present substantial information to indicate that the ostracod meets the definition of a species under the Act and subsequently does not warrant listing under the Act. 

Because this initial review did not find evidence to suggest protection under the Act may be warranted, the Service will not undertake a more thorough status review at this time.  However, anyone with additional scientific or commercial information regarding this ostracod, can submit the information or materials to the Field Supervisor, Klamath Falls Fish and Wildlife Office at any time.

The Endangered Species Act provides a critical safety net for America’s native fish, wildlife and plants. This landmark conservation law has prevented the extinction of hundreds of imperiled species across the national and promoted the recovery of many others.  Our priority is to make implementation of the ESA less complex, less contentious and more effective.

The mission of the U.S. Fish and Wildlife Service is working with others to conserve, protect and enhance fish, wildlife, plants and their habitats for the continuing benefit of the American people.  We are both a leader and trusted partner in fish and wildlife conservation, known for our scientific excellence, stewardship of lands and natural resources, dedicated professionals and commitment to public service.  For more information on our work in southern Oregon, California and Nevada and the people who make it happen, visit

-- FWS --