Some Facts on Rotenone...
Wyoming Game & Fish
As most reading this know, nonnative fish introductions, legal and illegal, are the biggest immediate threat to wild native fish. In aggregate, they are likely responsible for more native fish loss than any other single issue. And once introduced, nonnative fish tend to spread, infecting more waters as time goes by.
Few things in the world of fisheries management are as controversial as using piscicides such as rotenone to remove nonnative fish. More often than not, proposals to do such are met with opposition, up to and including legal challenges. And opposition seems to be increasing, not decreasing.
To be clear, in most cases, mechanical removal - electrofishing, trapping and netting — is not an effective tool for eradicating nonnative fish. Ditto for angler harvest. In both cases, while the effort may reduce the population, it rarely eliminates it, and the results are temporary.
NFC believes that the best way to win support for chemical reclamation is to engage those in opposition to it, answer their questions, and address their concerns where possible. While this will not win over everyone, it may win over some.
Below is a link to an informative Question-and-Answer piece about rotenone published by Oregon Fish and Wildlife in regard to rotenone. It is presented in a fair and factual manner, and contains a lot of interesting information.