Action timeline

November 5, 1992 – Conservation groups petitioned for Endangered Species Act protection for the splittail.

January 6, 1994 – The U.S. Fish and Wildlife Service proposed listing the splittail as a threatened species, but then delayed listing.

May 29, 1998 – The Center and the Sierra Club filed a lawsuit against the Service to force listing of the splittail, resulting in a federal court order compelling the Service to take action.

February 8, 1999 – The Service formally listed the splittail as a threatened species. The Center filed a lawsuit to force the Service to designate critical habitat.

June 2000 – After a lawsuit by water agencies, a federal court ordered the Service to review the splittail’s listing.

September 22, 2003 – The Service removed the splittail from the threatened species list.

August 28, 2007 – The Center submitted a notice of intent to sue the Service to require reconsideration of the splittail listing, also challenging wrongful Endangered Species Act decisions affecting 54 other species..