by Bob Hrabik
Ohio shrimp, which may grow up to 4 inches long, live in fresh and brackish water along the eastern United States seaboard to the Gulf of Mexico and are the only species of Macrobrachium found in the Mississippi River. Ohio shrimp have a curved rostum and up to 13 teeth; glass shrimp, their smaller relative, have a straight rostum and usually seven or fewer teeth. Once common in the Mississippi River below St. Louis, where commercial fisheries once existed near Chester and Cairo, Ill., Ohio shrimp were thought to be extirpated (locally extinct) in the Mississippi River bordering Missouri and Illinois since 1962. In 1991, however, Conservation Department biologists and a student from Southern Illinois University rediscovered them. The decline in the population of Ohio shrimp is thought to be related to the channelization of the river.
The Bollinger County Museum of Natural History is located in the historic town of Marble Hill, Missouri. We are the perfect destination for families, school groups, or the solo enthusiast!
See the eons in just one day! Our exhibits showcase Missouri’s historic and prehistoric past.
Become involved and explore the ways that you can support the Bollinger County Museum of Natural History!