Lake Mead was at 1,062 feet ... "Smallmouth bass are known to prey on native fish species in the Grand Canyon that are protected by the Endangered Species Act." Releasing cool water from the ...

They were put into Lake Powell in 1982 for recreational fishing purposes. But the invasive species has been affecting ... Lake Powell's neighbour, Lake Mead, is also under threat.

The razorback sucker is a large, warm-water fish native to the Colorado River basin ... In 2009 we requested that Nevada add contaminated areas around Lake Mead — where a small number of razorback ...