The Santa Ana sucker, a small, bottom-feeding fish residing in California’s Santa Ana River, is playing havoc with the region’s water supply, resulting in a group of cities and water districts asking ...

Twelve Southern California water agencies are suing the U.S. Fish and Wildlife Service for expanding critical habitat areas for the Santa Ana sucker fish. The water agencies say there is a lack of ...

Two environmental conservation groups have reached an agreement with three Southern California counties and the U.S. Army Corps of Engineers that will establish 400 acres of habitat along the Santa ...

SAN BERNARDINO, Calif.— Conservation groups have reached an agreement with three Southern California counties and the federal government to help promote the recovery of the San Bernardino kangaroo rat ...

A butterfly known to dwell along New Mexico’s eastern plains and the mountains to the north was deemed “threatened” by the federal government, affording the species protections to prevent its ...