The Center for Biological Diversity notified the U.S. Fish and Wildlife Service today that it intends to sue the agency for failing to finalize Endangered Species Act protection for the Clear Lake hitch — a rare fish found only in Lake County, California. … Each spring, adult Clear Lake hitch migrate into tributary streams to spawn before returning to the lake. … The main threat to the hitch is a lack of water flowing in spawning tributaries, driven by chronic over-withdrawal, both legal and illegal, and worsening climate-driven drought.