neogobius melanostomus the round goby neogobius melanostomus is a euryhaline bottom-dwelling goby of the family gobiidae,

american animal baltic black bottomdwelling caspian catch central distinctive dorsal established eurasia eurasian euryhaline family fin first fish fisheries fishing freshwater gobies gobiidae goby great have invasive lakes lakesn large major melanostomus native neogobius nonnative north populations reservoir rivers round sea several specimen spot