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What's New | Overview | General Resources | Related Resources
Current invaders:
Crustaceans: Rusty Crayfish | Spiny Water Flea
Fish: 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
Great Lakes: Invasive fish wreaking havoc on endemic mollusks
Headlines & Global News (4/7)
Originally introduced to rid the Great Lakes of destructive zebra mussels, invasive round goby fish have since disrupted the natural reproduction of mollusks, threatening the success of future generations.

Round goby could invade Lake Winnebago
The Post-Crescent (2/9)
In Wisconsin, round gobies could have a strong impact on Lake Winnebago, the Fox River, and the Wolf River, according to a University of Wisconsin aquatic invasive species expert.

Round goby a good-news, bad-news Great Lakes invader
Great Lakes Echo (1/27)
The round goby is one of the nastiest aliens in the Great Lakes, with what the Michigan Department of Natural Resources (DNR) calls its “voracious appetite and an aggressive nature which allows them to dominate over native species.”

DNR asks ice anglers to report any round gobies
WLUK TV - Green Bay, WI (1/22)
Anglers can now report round gobies using an online portal.

An invader in our waters: The Round Goby ins in Little Lake
Peterborough Examiner (1/14)
Unbeknownst to most, a small but aggressive invader is lurking in the tranquil waters of Little Lake, in Ont. For the time being, however, it seems to have met a roadblock in its attempt to expand and plunder waters to the north.

Some ostracods survive goby guts
Great Lakes Echo (5/18)
Ostracods, also known as seed shrimp, can survive getting eaten by the round goby, an invasive fish that comes from central Eurasia, according to a recent study.

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The Goby The goby is a bottom-dwelling fish that has great potential for causing impacts on Great Lakes fisheries. Originally the round goby and the tubenose goby were introduced into the St. Claire River in 1990, probably via contaminated ballast water of transoceanic ships.
Round goby are thriving in the Great Lakes Basin because they are aggressive, voracious feeders which can forage in total darkness. The round goby takes over prime spawning sites traditionally used by native species, competing with native fish for habitat and changing the balance of the ecosystem. The round goby is already causing problems for other bottom-dwelling Great Lakes native fish like mottled sculpin, logperch and darters. Goby can also survive in degraded water conditions, and spawn more often and over a longer period than native fish. Unfortunately, they have shown a rapid range of expansion through the Great Lakes.
Many of the characteristics of the round goby invasion parallel that of the Eurasian ruffe.

Photo Credit: David Jude, Center for Great Lakes Aquatic Sciences

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General Resources
Distribution map of Round Goby
U.S. Geological Survey (USGS)

Distribution map of Tubenose Goby
U.S. Geological Survey (USGS)

Factsheet: Round Gobies
Ohio Sea Grant College Program

Neogobius melanostomus (Round Goby)
U.S. Geological Survey (USGS)
Nonindigenous occurrences, means of introduction, and impact of the Round Goby.

Proterorhinus marmoratus (Tubenose Goby)
U.S. Geological Survey (USGS)
Nonindigenous occurrences, means of introduction, and impact of the Tubenose Goby.

Round Goby (Neogobius melanostomus)
Sea Grant Nonindigenous Species Site (SGNIS)
Includes scientifically reviewed articles as well as images from Sea Grant researchers.

Round Goby Fact Sheet
U.S. Geological Survey (USGS), Great Lakes Science Center
Outlines potential impacts of goby populations in the Great Lakes, current research and barriers being tested.

Round Goby ID Card
Minnesota Sea Grant Program
Informative fact sheet on the round goby, 1998.

Round Goby Invades Lake Michigan
Illinois Natural History Survey
Article describes the expansion of the round goby range into Lake Michigan. INHS Reports November-December 1995.

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Related Resources
GLIN: Agencies and Organizations, Fauna
GLIN: Fish and Fisheries in the Great Lakes Region

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Updated: December 18, 2017
Selected Photos: Copyright ©John and Ann Mahan
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