They are aggressive and displace native crayfish.
Look for their large claws with black bands on the tips and dark, rusty spots on each side of their carapace (hard outer body covering). http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=214There are over 350 species of crayfish in North America. Their claws are grayish-green to reddish-brown and smoother than most other crayfish. The rusty crayfish is a large, aggressive species of freshwater crayfish which is native to the United States, in the Ohio River Basin in parts of Ohio, Kentucky, and Indiana. They are still sold as bait and by biological supply companies. Outside their home range, rusty crayfish are likely to displace native crayfish and reduce aquatic plant abundance and diversity. Aquatic plants provide important habitat for fish and other aquatic animals, as well as prevent erosion. Invasives_Topic Contact_Invasive Species Coordinator Adapted from USGS Rusty Crayfish Fact Sheet (2007).
Rusty Crayfish (Orconectes rusticus) Rusty crayfish (Orconectes rusticus) are native to streams in the Ohio River Basin states of Ohio, Kentucky, Illinois, Indiana, and Tennessee. Rusty crayfish are prolific; females lay from 80-575 eggs!Stay informed by joining our newsletter. The rusty spots may not always be present or well developed on rusty crayfish from some waters.See the reported Wisconsin locations of this species on the It takes over the homes of native crayfish and has been known to eat fish eggs. PO Box 7921 | Madison, Wisconsin 53707-7921 Call 1-888-936-7463 (TTY Access via relay - 711) from 7 a.m. - 10 p.m. By damaging underwater habitat, fish also lose their spawning areas, protective cover and food. This aggressive species often displaces native or existing crayfish species. Nonresidents may not sell bait in Wisconsin." rusty crayfish-an aquatic invasive species in wisconsin; present in 1/3 of wi waters - native to the ohio river valley - can develop very high density populations in wisconsin waters-can eliminate native crayfish-can reduce aquatic plant, invertebrate, and fish populations The rusty crayfish was first captured in Illinois in 1973, and has been collected at over 20 locations in the northern portion of the state. Its range is rapidly expanding across much of eastern North America, displacing native crayfishes in the process. The aggressive Rusty crayfish (Orconectes rusticus), is an invasive “native” (native, that is, to the Ohio River Basin) that was first found in Wisconsin in 1960 and has since achieved pest status here. The rusty crayfish infestations of northern Wisconsin lakes have caused a variety of negative environmental and economic impacts. We don't share your information with anyone, and you can unsubscribe at any time.Copyright © 2020 Southeastern Wisconsin Invasive Species Consortium, Inc. All Rights Reserved. Call 1-888-936-7463 (TTY Access via relay - 711) from 7 a.m. to 10 p.m. Research the Wisconsin rules regarding catching crawfish.
If you are under 16, you do not need a fishing license.
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