Invasive Animal

Chinese Mystery Snail

Cipangopaludina chinensis

About This Species

Chinese mystery snail is a freshwater aquatic snail. It feeds on organic material and plankton at the bottom of still or slow-moving water bodies, such as lakes, ponds, and ditches. In areas where it is an established invasive species, it out-competes native freshwater snails and can reproduce to very high densities. Female snails can live up to five years, reproducing each year, and may produce up to 130 offspring at a time.

Chinese mystery snails were introduced to California in the late 1800s and have since spread to water bodies around North America. In BC, these snails have been reported in various lakes in Southern Vancouver Island, including the Victoria region, and around Mission.

By shutting off the opening to their shell, these snails can survive up to four weeks out of water.

How to Identify

Chinese mystery snail has a very large, distinctive cone-shaped shell, up to 6.5 cm tall with 6-7 whorls. Juvenile snails are light brown while adults range from olive green to ruddy brown. This is the largest freshwater snail in BC.

REPORT TO PROTECT BC’S BIODIVERSITY

Use the app

Observe and report to protect BC’s biodiversity

Report through this website

Use our form to tell us what you’re seeing and where.

CONTACT INFORMATION

INVASIVE SPECIES INFORMATION

Click or drag files to this area to upload. You can upload up to 3 files.
Please include photos of the suspected species to help potential identification by experts.
Please be specific and give us an address if possible.
//

Take Action

Prevention is the best approach.

Clean, Drain, Dry

Learn about best practices

The Clean Drain Dry program empowers you to help reduce the spread of invasive plants and organisms to BC waters by following the clean, drain, dry procedure on all watercraft and equipment.

Go Further

Identify

Help protect BC from Invasive Species.