Field Guide

Aquatic Invertebrates

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Media
pond mussel
Species Types
Scientific Name
Bivalve molluscs in order Unionoida
Description
Secretive and seldom seen, freshwater mussels are extraordinarily diverse in Missouri. We have nearly 70 species within our borders. Many are declining, and several are endangered.
Media
Photo of a painted devil crayfish standing on a sandy substrate
Species Types
Scientific Name
Lacunicambarus ludovicianus (syn. Cambarus ludovicianus)
Description
The painted devil crayfish is a burrowing lowland species. In Missouri, it is known from only a few locations in the Bootheel. Its overall color is olive green to blue, with reddish and cream markings.
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.