Learn more about the numerous invasive plants and animals that have already invaded some of our lakes in Central Wisconsin, and others that pose a threat to our state in the future.

These 1-2 page fact sheets are designed to be easy to read and reproduce. All of these fact sheets may be reproduced and distributed free of charge. 

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Click the DOWNLOAD HERE button below to download a pdf of all of our AIS fact sheets.

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Asian Clam (Corbicula fluminea)

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Banded Mystery Snail (Viviparus georgianus)

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Big-eared Radix (Radix auricularia)

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Brittle Naiad (Najas minor)

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Carolina Fanwort (Cabomba caroliniana

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Chinese Mystery Snail (Cipangopaludina chinensis)


Curly-leaf Pondweed (Potamogeton crispus)

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Eurasian watermilfoil (Myriophyllum spicatum)

EWM Manual Removal

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Faucet Snail (Bithynia tentaculata

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Flowering Rush (Butomus umbellatus)

Flowering Rush Comparison Photos

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Hydrilla (Hydrilla verticillata)


Japanese Hops (Humulus japonicus)

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Japanese Knotweed (Fallopia japonica)

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New Zealand Mudsnail (Potamopyrgus antipodarum)

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Phragmites a.k.a Common Reed (Phragmites australis)


Purple Loosestrife (Lythrum salicaria)

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Rusty Crayfish (Orconectes rusticus)

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Spiny Water Flea (Bythotrephes longimanus)

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Starry Stonewort (Nitellopsis obtusa)

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Water Chestnut (Trapa natans)

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Water Hyacinth (Eichhornia crassipes)


Water Lettuce (Pistia stratiotes)

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Yellow Floating Heart (Nymphoides peltata)

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Yellow Iris (Iris pseudacorus)

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Zebra Mussel (Dreissena polymorpha)