What are they?
Invasive species are species that are not native to Canada and that have invasive or aggressive tendencies.
They include plants, animals, insects, fish, crustaceans and mollusks, fungus, bacteria and other species.
These invasive species have either already invaded Canada or have the potential to invade Canada.
Some well-known examples of invasive species in Canada include zebra mussels, purple loosestrife, and rats.