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Laguna El Toro, La Libertad, Peru
Small Laguna El Toro lies at an elevation of ~14,000 in the Province of La Libertad in northern Peru. Sport fisherman and cage-culture aquaculture yields rainblow trout.
The lake is near the massive Mina Barrick gold mine, and there is concern about water pollution. The pH measured with pH paper was 5.0 in September 2013, but nevertheless the cultured trout appeared healthy.
Limnology - the study of inland waters
Photo: September 2013