- 152 species in North America
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Order: | Prosobranchia |
| Family: |
Identification Tips:
• Small spiral snail (3-7 mm)
• Opening on right when facing with point up
• Shell whorls bulge out on sides
Life History:
• Most occur on aquatic plants; sometimes in huge numbers
• Scape algae
| POLLUTION TOLERANCE | ||||
| Very Sensitive | Somewhat Sensitive | Facultative | Somewhat Tolerant | Very Tolerant |
| Most | ||||
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Primary Information Source:
Voshell, J. Reese. 2002. A Guide to Common Freshwater Invertebrates of North America. McDonald and Woodward Publishing Company. Blacksburg, Virginia.