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What are Invasive Species?

Broadly speaking, an invasive species is an organism (e.g., animals, plants, parasites, viruses etc.) not native to a region that when introduced, either intentionally or accidentally, may out-compete native species for available resources such as food and space.

In many cases, invasive species become successful in their new environments due to their high reproductive rates and absence of native predators and diseases.

Invasive species can have negative economic, social, environmental and human health implications.

What are Aquatic Invasive Species (AIS)?

An aquatic invasive species (AIS) can either live in freshwater or marine environments. The majority of the species of concern to Manitoba, such as Zebra Mussels, Spiny Waterflea, Rusty Crayfish, Quagga Mussels and Asian Carp are freshwater species.

In Manitoba, fish, invertebrates, plants and algae that are designated as AIS are listed in Schedule A of the AIS Regulation.

Watercraft Inspection Program

Watercraft Inspection Program

Don’t Let it Loose

2021 Invasive Species Week - April 18-24

AIS plant logo  

You can help prevent the introduction and spread of aquatic invasive species. Never release aquarium pets, water garden plants, live food (e.g., fish, crabs, molluscs) or live bait into water bodies, toilets or storm sewers. Sport fish may only be released back into the waters from which they were caught (e,g., catch-and-release). Never move a sport fish from one body of water to another.

Releasing any organism into a body of water is illegal and has the potential to start an invasion, and introduce new diseases.

You can stop it. Stop the spread - don’t let it loose.

Recently Zebra Mussels were found on moss balls or decorative algal balls, purchased from a number of distributors who sold to retail stores in Manitoba. Invaded moss balls could also be obtained online via e-commerce sites in Canada. It is illegal to possess Zebra Mussels in Manitoba. Did you recently obtain a moss ball? If so, click here for more information.