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Aquatic Invasive species - Non-regulated animals

Whether they come in ballast water, on the hulls of recreation boats or from the water of an angler’s bait bucket, many non-native species such as zebra mussels and Eurasian water milfoil have found their way into Wisconsin’s waterways. Their presence can cause severe damage to local ecosystems, industry and tourism. However, the Wisconsin DNR is part of a strong partnership of public and private stakeholders in Wisconsin committed to an effective strategy of prevention, containment and control. The more you know about these invaders, the more you can do to help stop the spread to Wisconsin's precious waters.

Learn about aquatic invasives

View a printable list of all species regulated by NR 40 [PDF] or a list of plants only [PDF].

Click on the buttons below to see what species are invasive in Wisconsin.

The buttons separate invasive plants and animals into regulated or non-regulated categories. Regulated species currently have legal restrictions under the Invasive Species Rule, Chapter NR 40. Non-regulated species currently are not regulated by Chapter NR 40. View our terminology page for classification definitions.

Plants Regulated Non-regulated
Animals Regulated Non-regulated

Aquatic Invasive species - Non-regulated animals

Classification Common name Scientific name Factsheet Photo
Caution Cell from hell; phantom dinoflagellate Pfiesteria piscicida     Click to view Lit. Review for this species. Click to view SAG Form for this species.
Caution Mute swan Cygnus olor     Click to view Lit. Review for this species. Click to view SAG Form for this species.
Non-Restricted Red-eared slider with a carapace (top shell) length of less than 4 inches Trachemys scripta elegans Click to view factsheet for this species.   Click to view Lit. Review for this species. Click to view SAG Form for this species.

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Last revised: July 10, 2015