Featured Species

Invasive Species

Offices at the Midwest Fisheries Center in partnerships with other agencies work to monitor Bighead, Silver, Black, and Grass Carps, and Round Goby to inform management actions in the Upper Mississippi River. To understand the impacts of invasive species invasive species
An invasive species is any plant or animal that has spread or been introduced into a new area where they are, or could, cause harm to the environment, economy, or human, animal, or plant health. Their unwelcome presence can destroy ecosystems and cost millions of dollars.

Learn more about invasive species
in this area, we study these species range and habitat use. To accomplish this goal we use several techniques like eDNA, telemetry, hydroacoustics, and multi-beam sonar imagery.

Native Species

The Midwest Fisheries Center works to restore and enhance declining populations to self-sustaining levels to avoid listing under the Endangered Species Act and prevent declines of other priority species by addressing recognized threats as soon as possible. Focal species include the Topeka shiner, Lake Sturgeon, and Higgins’ Eye Pearly Mussel.                                                                                   

Pollinator Garden

Visitors can schedule a tour of our urban pollinator garden that features monarch butterflies, nesting black-capped chickadees and native plants such as common milkweed, golden alexander, Ohio Spiderwort, wild bergamot and large beardtongue. Tours of of the pollinator garden, lobby and labs occur during our lobby during open hours. For more information, please contact the main office at 608-684-0085.

A pile of mussels.

The Higgins eye is a freshwater mussel of larger rivers where it is usually found in areas with deep water and moderate currents. Its range includes the upper Mississippi River, the St. Croix River between Minnesota and Wisconsin, the Wisconsin River in Wisconsin, and the lower Rock River...

FWS Focus
A Silver carp jumping out of the water with boat wake below and a tree lined shoreline in the background

Silver carp (Hypophthalmichthys molitrix) are one of four nonnative fish species belonging to a group commonly referred to as “invasive carp”. Native to eastern Asia, silver carp were introduced to the United States during the 1970’s and 1980’s to private fish farms and wastewater...

FWS Focus
Underwater photo of a bighead carp in a tank with white background

Bighead carp (Hypophthalmichthys nobilis) are native to eastern Asia and are one of four nonnative fish referred to as “invasive carp”. These fish are large, deep bodied fish that have a large head and a large toothless mouth with a protruding lower jaw. The bighead carp eyes are far...

FWS Focus