Red Swamp Crayfish & Marbled Crayfish
Red swamp crayfish (RSC) and marbled crayfish compete aggressively for food and habitat with native amphibians, invertebrates, and juvenile fish. Burrowing and foraging behavior can also lead to erosion, summer cyanobacteria blooms, and eutrophic conditions.
How You Can Help
Report observances to the Midwest Invasive Species Information Network (MISIN) or notify your local CISMA.
Reduce Invasive Pet and Plant Escapes (RIPPLE) and never be release pets into wild waterways.
Dispose or trade any unwanted fish or crustaceans.
Although not legal for sale in Michigan, RSC and marbled crayfish can express a variety of colors which make wrongful identification in retailer shops a possibility.