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Round Goby in the Great Lakes Region What's New | Overview | Distribution Maps | Studies/Management Plans | Federal Resources | State/Provincial Resources Current invaders:
Crustaceans: Rusty Crayfish | Spiny Water FleaFish: Goby (Round) | Goby (Tubenose) | Rudd | Ruffe | Sea Lamprey | White Perch Mollusks: Quagga Mussel | Zebra Mussel Plants: Curly-leaf Pondweed | Eurasian Watermilfoil | Phragmites (non-native) | Purple Loosestrife Viruses: Viral Hemorrhagic Septicemia Virus (VHSv) Potential invaders:
Fish: Asian Carp [Invasive species home page] 
What's New Invasive gobies staking out new territory Great Lakes Echo (2/12) An uninvited outsider is rapidly showing up in new freshwater territory in Wisconsin—and a recent scientific study indicates the increasing impact the small fish. Round goby, an invasive fish, appears to be making way up Rouge River The Republic (11/27) The nonprofit group Friends of the Rouge found more than a dozen round goby while sampling sections of the Lower Rouge River in southeast Michigan. Hundreds of bird deaths sound alarm on problems in the Great Lakes Detroit Free Press (10/18) Nearly 300 dead or dying loons and other fish-eating birds have been found on the beaches of Sleeping Bear Dunes National Park -- all victims of botulism that has scientists concerned about the changing ecology of the Great Lakes. Commentary: Campaign for the birds Michigan Radio (10/18) There are hundreds of dead birds washing ashore in Michigan due to an outbreak of botulism caused, in part, by invasive species; I wish politicians would stop talking about imaginary birds and take this issue on, before it’s too late. Salties bring no new invaders, thanks to ‘swish and spit’ Duluth News Tribune (4/11) Supporters say saltwater flush is working to thwart invasives until ballast treatment arrives in Great Lakes. Great Lakes biologists to fire underwater cannon to combat goby Erie Time-News (4/4) Scientists will fire an underwater cannon in parts of Michigan's Grand Traverse Bay this summer, hoping to scatter the nuisance fish that eat native trout and herring eggs.
While tubenose goby populations have remained relatively small, a rapid range expansion of round goby has occurred throughout the Great Lakes since initial introduction via ballast water. Several physiological and behavioral traits have allowed this bottom-dwelling fish to thrive in the Great Lakes ecosystem: aggressive behavior, voracious feeding habits, and their ability to detect water movement, allowing them to feed in complete darkness. Environmental impact: round gobies have been linked to declines in populations of other bottom-dwelling Great Lakes native fish like mottled sculpin, logperch, and darters. The round goby competes with these species for food and habitat, especially spawning sites. Other competitive advantages held by the round goby over natives are their ability to survive in degraded water conditions, spawn more frequently over a longer period, reproduce rapidly, and guard nests from predation of their eggs. Gobies consume the eggs and fry of lake trout, posing a substantial threat to this economically and ecologically valuable native fishery. Round gobies also are troublesome to recreational anglers given their ability to "steal" bait, replacing the catch of desired species such as walleye. Round gobies generally prefer nearshore habitats of rock, sand, cobble, gravel, and/or submerged aquatic vegetation (e.g., macrophytes), but are also invading offshore reefs where they are an increasing source of prey for burbot, lake trout, and lake whitefish. Because round gobies contain less energy upon consumption than native prey, and ingest toxic substances through consumption of large quantities of zebra and quagga mussels, this is problematic for these predator fish, which are also popular sport fish--causing an increase in human health risks for those anglers who eat their catch on a regular basis. Photo credit: David Jude, University of Michigan SNRE, Center for Great Lake and Aquatic Sciences  View full, print-ready factsheet
Distribution Maps
Studies, Assessments and Management Plans Bioacoustic traps for the management of the round goby (2010) University of Minnesota, Duluth Investigating the use of bioaccoustic techniques to interrupt round goby spawning. Fish Pesticide May Control Unwanted Round Goby (2008) USGS Scientists evaluate four fish pesticides, as well as experimentally-manipulated dissolved oxygen levels, for toxicity to round gobies. Impact of Data Availability on Site Assessment and Predictive Behavior of Aquatic Invasive Species (2010) U.S. Army Corps of Engineers - Aquatic Nuisance Species Research Program Outlines the status of documentation and physiological ecology in relation to the ability to predict site susceptibility to new invasions. Scientists use odour cues to lure invasive round gobies into traps (2008) Great Lakes Fishery Commission Researchers used the urine of male round gobies to lure females into traps for removal. Preliminary evidence showed that these methods were effective at disrupting goby behavior. Use of electrical barriers to deter movement of round goby (2001) American Fisheries Society Symposium (Vol. 26) Researchers performed both laboratory trials and field tests to determine the effectiveness of a series of electric cables in preventing the movement of adult round goby among watersheds in the Great Lakes region. What Will Round Gobies Do to Great Lakes Streams? (Web video, 2011) University of Wisconsin Sea Grant After sampling round gobies in 26 Wisconsin streams and observing no devastating ecosystem impacts, University of Wisconsin researchers are continuing stream assessments throughout the state to gain a deeper understanding of the potential impacts (or lack thereof) of this Great Lakes invader.
U.S. and Canadian Federal Resources Aquatic Invasive Species Fisheries and Oceans Canada Nab the Aquatic Invader – Gabby "the Lowlife" Round Goby Sea Grant Nonindigenous Species (SGNIS) Round Goby U.S. Geological Survey - Great Lakes Science Center Round Goby National Sea Grant Network, Geographic Education Alliances Exotic Aquatics on the Move Round Goby Aquatic Nuisance Species Task Force Species of Concern Round Goby Stop Aquatic Hitchhikers! Round Goby - Neogobius melanostomus U.S. Army Corps of Engineers - Aquatic Nuisance Species Research Program Round Goby Species Profile U.S. Department of Agriculture - National Invasive Species Information Center Roundy Goby Factsheet U.S. Geological Survey - Nonindigenous Aquatic Species State and Provincial Resources Alien Profile: Round Goby Wisconsin Department of Natural Resources - Environmental Education for Kids Great Lakes Photography: Round Goby Michigan Sea Grant Nuisance Species: Round Goby Ohio Department of Natural Resources - Division of Wildlife Round Gobies Invade North America Minnesota Sea Grant Round Goby Illinois Environmental Protection Agency Round Goby Minnesota Department of Natural Resources Round Goby New York Sea Grant New York Invasive Species Web Site Round Goby Aquatic Invasive Species of Pennsylvania Round Goby (Neogobius melanostomus) Minnesota Sea Grant Round Goby (Neogobius melanostomus) Minnesota Sea Grant Round Goby (Neogobius melanostomus) New York Sea Grant Round Goby (Neogobius melanostomus) Ontario Federation of Anglers and Hunters - Invading Species Awareness Program Round Goby (Neogobius melanostomus) Wisconsin Sea Grant Fish of the Great Lakes Round Goby Fact Sheet Indiana Department of Natural Resources Round Goby Factsheet Pennsylvania Sea Grant Round Goby Factsheet Wisconsin Department of Natural Resources Round Goby Factsheet Wisconsin Sea Grant Round Goby Watch Card Great Lakes Sea Grant Network The Round Goby University of Windsor
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The round goby (Neogobius melanostomus) is a non-native fish that is causing substantial ecological and economic impacts on Great Lakes fisheries. Originating from central Eurasia, the round goby and the closely related 