The round goby (Neogobius melanostomus) is a euryhaline bottom-dwelling species of fish of the family Gobiidae. It is native to Central Eurasia, including the Black Sea and the Caspian Sea.

Round Goby (Neogobius melanostomus) French common name: Gobie à taches noires Order: Gobiiformes Family: Gobiidae The round goby is a small, bottom dwelling fish that aggressively feeds on small aquatic organisms and can spawn several times each year. Adult round goby can be between 6-16 cm long with a cylindrical body and rounded snout.

Round Goby (Neogobius melanostomus) The round goby is a small, bottom-dwelling invasive fish. Native to the Black and Caspian seas in eastern Europe, it was first found in North America in 1990 in the St. Clair River north of Windsor, Ontario. Researchers believe the fish was brought to North America in the ballast water of ships from Europe.

The round goby (Neogobius melanostomus) is a small and soft bodied fish that is native to central Eurasia. Round gobies are 4 to 10 inches long, have a gray body, and a distinctive black spot on the anterior most dorsal fin. Juvenile round gobies are cloudy gray and become darker with maturation.

The round goby (Neogobius melanostomus) is native to the Black and Caspian Seas between Europe and Asia and was brought to the U.S. by way of the Great Lakes in cargo ship ballast. Since then, the invasive fish has made its way down the Illinois River and has been confirmed just across the Mississippi at Alton, Illinois.