Maryland Department of Natural Resources.
The short story of invasive fishes in Maryland.
See also: Report an aquatic invasive using Maryland Invasive Species Tracker (MIST); tool for the public to help the state track invasive species in its waterways.
Invasive Species Centre (Ontario).
Nature Conservancy.
Advanced tools help our scientists detect native and invasive species in Lake Ontario and the St. Lawrence River.
Minnesota Department of Natural Resources.
The Minnesota Department of Natural Resources has classified 13 high-risk invasive aquatic plants, fish and invertebrates as prohibited invasive species. The DNR classifies invasive species as prohibited to prevent their introduction and spread in Minnesota and to protect the state’s environment, economy, natural resources and outdoor recreation. It is unlawful to possess, import, purchase, transport or introduce prohibited invasive species, except under a DNR-issued permit for disposal, decontamination, control, research or education.
The prohibition on 12 of the 13 species is effective immediately, with publication of the new listings in today’s State Register. Jumping worms will be prohibited invasive species effective July 1, 2024, to provide additional time for outreach to businesses and others who may be impacted by the rule change. A complete list is available on the DNR invasive species laws website.
Smithsonian Institution. Smithsonian Environmental Research Center. Marine Invasions Research Lab.
Michigan State University Extension.
Northeast Aquatic Nuisance Species Panel.
Maryland Matters.
Maryland renamed the northern snakehead to the Chesapeake Channa in April 2024. The name change aims to increase public interest in eating the fish and control its population. The Maryland Department of Natural Resources will begin changing the name on January 1, 2025.
See also: Senate Bill 207 / House Bill 19
New York Invasive Species Clearinghouse.
DOI. USGS. Wetland and Aquatic Research Center.
Provides distribution maps and collection information (State and County).
DOI. USGS. Wetland and Aquatic Research Center.
Provides detailed collection information as well as animated map.
Maryland Department of Natural Resources. Fisheries Service.
Virginia Department of Wildlife Resources.
New York State Department of Environmental Conservation.
New York State Department of Environmental Conservation (DEC) Commissioner Basil Seggos today encouraged anglers in the Delaware River to be on the lookout for northern snakehead, an invasive fish native to Southeast Asia. A northern snakehead was recently caught in the Callicoon area of the Delaware River. Given the right environmental conditions, this invasive species can prey on and compete with other fish, upsetting the natural balance of local ecosystems. "Northern snakeheads are listed federally as injurious wildlife, and New York State law prohibits their live possession," Commissioner Seggos said. "Any snakehead caught should be killed immediately and not released back into the water." In the event an angler catches a northern snakehead, DEC advises anglers to report the catch to the regional NYS DEC fisheries office, DEC's Invasive Species Bureau at isinfo@dec.ny.gov or (518) 402-9425, or submit a report through iMapinvasives.
Pennsylvania Fish and Boat Commission.
Northern snakeheads can be confused with native Pennsylvania species like the Bowfin and Burbot. For help telling them apart, refer to various identification guides.
Pennsylvania Fish and Boat Commission.
The Pennsylvania Fish and Boat Commission (PFBC) has issued a strong advisory to encourage anglers who catch invasive Northern Snakeheads in the lower Susquehanna River, and elsewhere in the Commonwealth, to report and dispose of any fish caught. This advisory follows multiple Northern Snakehead captures in Conowingo Reservoir by anglers and natural resource agency biologists this summer, including the first evidence of Northern Snakehead reproduction in the reservoir.
Washington State Recreation and Conservation Office. Washington Invasive Species Council.
South Carolina Department of Natural Resources.
South Carolina Department of Natural Resources officials are warning anglers that if the invasive Northern snakehead fish is caught in the Palmetto State, anglers should kill it immediately and by all means NOT release it back into the water. In early October, a Georgia angler reported catching a Northern snakehead, an aquatic invasive species, in a pond located on private property in Gwinnett County, Ga. This is the first time the Northern snakehead has been confirmed in Georgia waters. In the Southeast, Northern snakeheads have also been found in North Carolina and Florida. If you believe you have caught a Northern snakehead:
DOI. USGS. Wetland and Aquatic Research Center.
U.S. Geological Survey Circular 1251; Researched and funded by the U.S. Geological Survey and the U.S. Fish and Wildlife Service.
Maryland Department of Natural Resources.
In an effort to monitor invasive northern snakeheads in the Chesapeake Bay and Blackwater River, the Maryland Department of Natural Resources (DNR) announces a new tagging program in conjunction with the U.S. Fish and Wildlife Service (USFWS). Both agencies are placing yellow or blue tags on up to 500 northern snakeheads. Each tagged northern snakehead caught and harvested from now until 2024 could be rewarded with a gift card of $10 or $200 depending on the tag.
In order to qualify, the harvester must report the tag number to USFWS at 800-448-8322, and is asked to take a picture of their harvested and tagged northern snakehead. Only harvested northern snakeheads with reported tags will qualify for gift cards.