Rotenone: when you absolutely, positively have to kill every last fish in the lake.
How far would you go to get rid of an invasive species? In New Brunswick, conservation groups and local First Nations want to kill all of the fish in Miramichi Lake using a pesticide called rotenone. They want to reset the lake’s ecosystem, rid it of invasive smallmouth bass, and give the Miramichi River system’s dwindling Atlantic salmon a second chance. Read more in Hakai.