Biological Control Options
Grass Carp are an exotic herbivorous fish native to China. These fish are widely used in aqua culture and as bio-control agents for aquatic plants. They eat a wide variety of aquatic plants but prefer certain types of plants. Their use is highly regulated and not permitted in many states, including Massachusetts.
There are other biological management techniques that are available such as the herbivorous Milfoil Weevil (Euhrychiopsis lecontei) which has shown some signs of success in managing Eurasian Milfoil.