If you think the Clones on Star Wars were a threat, just wait until you hear about Asian clams.
While we all know that invasive species are particularly hard on native species in the environment, invasive species can have it pretty tough too.
They might seem innocent and lovely in your aquarium, but released into the wild, your plants and fish can knock aquatic ecosystems right out of balance.
Why do invasive species adapt so well to their new environments? Find out on this Moment of Science.