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Government of Manitoba
Conservation and Water Stewardship
Aquatic Invasive Species
What are Aquatic Invasive Species?

An aquatic invader is a non-native species, whose introduction will likely cause (or has already caused) damage to the host ecosystem, existing species therein, the economy or human well-being. Invasive species thrive in the absence of their native predators and have the potential to drastically alter habitat, rendering it inhospitable for native species. ( Source: Department of Fisheries and Oceans Canada)

To report an Aquatic Invasive Species click Here
Why are Zebra Mussels making news?

Zebra mussels (Dreissena polymorpha) were confirmed in Lake Winnipeg in the fall of 2013. Zebra mussels are small, clam-like, aquatic animals that are a significant environmental and economic concern to Manitoba. Native to Eastern Europe and Western Asia, zebra mussels have caused millions of dollars in damage to the Laurentian Great Lakes area and have cost the North American economy billions of dollars to control.

Zebra Mussel Treatment and Control Project

Since Zebra Mussels were found in Lake Winnipeg in the Fall of 2013, the Department of Conservation and Water Stewardship has explored a number of options to address the issue, culminating in the Treatment and Control Project in 4 harbours. The Frequently Asked document listed below contains answers to common questions posed by Manitobans.

Please visit this web page regularly to get current status updates on the Zebra Mussel Treatment and Control Prroject. View the calendar below for treatment dates. To help prevent the spread of Zebra Mussels, click here.

Stop Aquatic Invasive Species
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Stop Aquatic Invasive Species
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Aquatic Invasive Species Update
Project Update for
June 16, 2014

Other Aquatic Invasive Species
Rusty Crayfish


The Rusty Crayfish Image

Photo Courtesy of DFO
Zebra Mussel


The Zebra Mussel Image

Photo Courtesy of Ohio Sea Grant
Asian Carp


Asian Carp Image
Spiny Waterflea


Spiny Waterflea / Fishhook Waterflea Image
Invasive Giant Reed



Invasive Giant Reed Image
Round Goby

Round Goby Image
Eurasian Watermilfoil

Eurasian Watermilfoil Image
Curly-leaf Pondweed

Curly-leaf Pondweed Image
Quagga Mussel

Zebra Mussel/ Quagga Mussel Image
Fishhook Waterflea

Spiny Waterflea Image

If you think you have encountered an aquatic invasive species, or need further information, please contact:

Manitoba Conservation & Water Stewardship, Fisheries Branch
Box 20, 200 Saulteaux Cres.
Winnipeg, Manitoba, R3J 3W3

Telephone: (204) 945-7787
Fax: (204) 948-2308
Toll Free: (877) 867-2470
Email: fish@gov.mb.ca

To report an Aquatic Invasive Species click Here
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