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Conservation Planning Branch
CA Department of Fish and Wildlife
1416 Ninth Street, 12th Floor
Sacramento, CA 95814
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New Zealand Mudsnail
New Zealand mudsnails around a dime
New Zealand Mudsnail INFO
- Map of CA Infested Areas:
Scroll to the bottom of the page. Click on California and zoom in to expand area of concern. Click on each dot for information about individual sites.
- Frequently Asked Questions
- General Invasive Species Info
What you can do to prevent the spread of New Zealand Mudsnails
- If you wade, freeze waders and other gear overnight (at least 6 hours).
- Have extra waders and boots that are used only in infested waters. Store them separately.
- After leaving the water, inspect waders, boots, float tubes, boats/trailers—any gear used in the water.
- Remove visible snails with a stiff brush and follow with rinsing.
If possible, freeze or completely dry out any wet gear.
- Never transport live fish or other aquatic animals or plants from one water to another.
- Snails range in size from a grain of sand to 1/8 inch in length and are black or brown in color.
- GET THE WORD OUT !
- National Management and Control Plan for the New Zealand Mudsnail (PDF)
- How to Prevent the Spread of New Zealand Mudsnails through Field Gear - 2010 (PDF)
- New Zealand Mudsnail Watch Card (PDF)
- Controling the Spread of NZMS on Waders (Admin Report 2005-2) (PDF)
- Printable Mudsnail 12" x 18" color poster (PDF)
- Printable Mudsnail 11" x 17" black and white poster (PDF)