"The Supreme Court [Monday] decided -- for now -- not to get involved in ongoing litigation over California's endangered delta smelt."
"The justices decided against taking up a constitutional challenge to the small fish's listing under the Endangered Species Act.
The species has been the center of a legal fight after U.S. Fish and Wildlife Service efforts to protect its habitat in the Sacramento-San Joaquin Delta prompted opposition from local businesses and water districts.
A 2008 biological opinion concluded that water flowing to irrigation districts and farms in the Central Valley had to be reduced in order to protect the tiny fish."