Rotenone is the "reset button" for fisheries, but what is it and how does IDFG use it?

The chemical is a naturally occurring substance that suffocates fish

While it is very effective at removing unwanted fish, it also kills desirable fish as well. But that doesn’t mean all good fish are lost. Managers often use nets or electrofishing to remove desirable fish before using rotenone so those fish can be restocked after the rotenone treatment.