NPR reported
The Devils Hole pupfish, a critically-endangered species and an icon of conservation, ekes out a precarious existence in Death Valley National Park. There, in the scorching desert, guarded by fences and video surveillance, this fish swims around in a sunken fishbowl made of rock that’s been its only natural home for millennia.
About a year ago, the population abruptly dropped to just 20 fish. Wildlife managers were so alarmed that, for the first time ever, they decided to release some pupfish that they’d been breeding in a huge tank for over a decade as a kind of insurance policy. They started by putting 19 captive-bred fish into Devils Hole, and later added about 50 more.
Read more at As federal scientists faced turmoil, the Devils Hole pupfish reached a crisis point
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