Dead crappie and blue gill. Rotenone treatment of Pine Mountain Lake near Groveland to kill trout with whirling disease, Sep 1984 (26584154410)

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Description: Dead crappie and blue gill. Rotenone treatment of Pine Mountain Lake near Groveland, Tuolumne County, to kill trout with whirling disease, Sep 1984. CDFW file photo. Date: 19 April 2016, 13:56. Source: Dead crappie and blue gill. Rotenone treatment of Pine Mountain Lake near Groveland to kill trout with whirling disease, Sep 1984. Author: California Department of Fish and Wildlife from Sacramento, CA, USA.