In 1897, Yosemite began stocking fishless lakes with trout; now its rare frogs are rebounding
Yosemite stocked fishless lakes with trout from 1897. Trout and a fungus devastated its frogs, but numbers rose sevenfold in 20 years after stocking ended.
We haven't written up this one. Hindustan Times - World News has the full story — the link below goes straight to it.