Field Guide

Aquatic Invertebrates

Showing 31 - 33 of 33 results
Media
Photograph of Purple Wartyback freshwater mussel shell exterior view
Species Types
Scientific Name
Cyclonaias tuberculata
Description
Before buttons were made of plastic, they were made of shell. Because only white buttons were in demand, the coppery-purple shell of this species made it worthless for the button industry.
Media
Photograph of Sheepnose freshwater mussel shell exterior view
Species Types
Scientific Name
Plethobasus cyphyus
Description
The sheepnose has been classified as endangered in Missouri and is a candidate for federal endangered status.
Media
elktoe
Species Types
Scientific Name
Alasmidonta marginata
Description
The elktoe is one of many Missouri mussels with a declining population.
See Also

About Aquatic Invertebrates in Missouri

Missouri's streams, lakes, and other aquatic habitats hold thousands of kinds of invertebrates — worms, freshwater mussels, snails, crayfish, insects, and other animals without backbones. These creatures are vital links in the aquatic food chain, and their presence and numbers tell us a lot about water quality.