Field Guide

Aquatic Invertebrates

Showing 11 - 14 of 14 results
Media
Water boatman viewed from above
Species Types
Scientific Name
About 125 species in North America in the family Corixidae
Description
Water boatmen are one of the few aquatic true bugs that are not predatory and do not bite people. Instead, they suck juices from algae and detritus. Only a few types eat other small aquatic creatures.
Media
Adult riffle beetle walking on a rock under water
Species Types
Scientific Name
About 100 species in North America north of Mexico
Description
Riffle beetles live underwater, in shallow, swift-flowing streams, as both adults and larvae. The adults, the size of small ants, are oval with long legs. The larvae are elongated, multi-segmented, and rather hard and stiff; they reach about ½ inch long.
Media
Riffle beetle larva photographed in water in a dish
Species Types
Scientific Name
About 100 species in North America north of Mexico
Description
Riffle beetles live underwater, in shallow, swift-flowing streams, as both adults and larvae. The larvae are elongated, multi-segmented, and rather hard and stiff; they reach about ½ inch long. The adults, the size of small ants, are oval with long legs.
Media
Two pairs of Asian clam shells, still hinged together, showing exterior and interior
Species Types
Scientific Name
Corbicula fluminea
Description
The Asian clam is a nonnative, invasive species that lives in a variety of aquatic habitats. It has thick shells with distinctly ridged, concentric rings and a yellowish-brown to dark brown shell covering.
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.