Killing Non-native Fish with Toxins

The New Mexico Water Quality Control Commission approved a plan that allows for the poisoning of 150 miles worth of streams and rivers.  The plan, initiated to wipe-out non-native fish species and bring back the native cutthroat population, would call for the use of antiymicin.  Opponents of the proposition claim that this could cause long-term harmful effects.  What do you think?

Source:  KOBTV, New Mexico