Many markets in Ontario offer fresh live seafood and fish. Unfortunately, some of the species available for sale have the potential to survive if they were to successfully invade a lake or river in Ontario. Species, such as Asian carps and Northern Snakehead, are popular in Ontario’s markets and would cause extreme harm to Ontario’s lakes and rivers if they were introduced. To prevent the introduction of these species, Ontario prohibits the live possession and sale of Bighead, Silver, Grass, and Black carp, as well as all species of fish in the snakehead family. In order to protect Ontario’s lakes and rivers, never release live fish into any waterbody.