Editing Round goby (section)

==Feeding==
Round gobies actively feed both [[nocturnal]]ly and [[Diurnal animal|diurnal]]ly and are believed to detect prey only while stationary. The primary diet of round gobies includes [[mollusk]]s, [[crustacean]]s, [[worm]]s, fish eggs, [[zebra mussel]]s, small fish, [[insect]] [[larva]]e, and other small invertebrates (insects and amphipods) living on the bottom of lakes and streams.<ref name="Kornis M.S. 2012"/> In spring, the main elements of their diet in the [[Sasyk Lagoon]] are ''[[Hydrobia]]'', ''[[Cerastoderma glaucum|Cerastoderma]]'', and ''[[Abra (bivalve)|Abra]]''.<ref>{{Fauna of Ukraine, 8(5)}}</ref> In the same season, near the [[Romania]]n coasts of the Black Sea, the round goby feeds on [[polychaete]]s, [[crustaceans]] (''[[Idotea balthica]]'', ''[[Pachygrapsus marmoratus]]'', ''[[Xantho poressa]]'', etc.), and juvenile gobies.<ref>Porumb I.I. (1961) Contribuţii la cunoşterea biologiei guvisilor (''Gobius batrachocephalus'', ''Gobius cephalarges'' şi ''Gobius melanostomus'') din dreptul litoralului Romînesc al Mării Neagre (date preliminare), Hidrobiologia, 3, 271–282.</ref> Near [[Sevastopol]], the round goby feeds on [[molluscs]] (''[[Mytilaster lineatus]]'' and ''[[Abra (bivalve)|Abra]]'' sp.).<ref>Khirina V.A. (1950) Materialy po pitaniju nekotoryh bentosnyh ryb v pribrezhnoj zone Chernogo moria u Karadaga. Trudy Karadagskoy biologicheskoy stantsii, No 10: 53–65.</ref> In the [[Baltic Sea]], they impact ''[[Blue mussel|Mytilus edulis]]'' populations.<ref>Neogobius melanostomus (Gobie arrondie). (n.d.). Animal Diversity Web. https://animaldiversity.org/accounts/Neogobius_melanostomus/</ref>

In the [[Gulf of Odessa]], twenty-three items are identified in the diet of the round goby;<ref>{{cite journal | last1 = Kvach | first1 = Y. | last2 = Zamorov | first2 = V. | year = 2001 | title = Feeding preferences of the round goby ''Neogobius melanostomus'' and mushroom goby ''Neogobius cephalarges'' in the Odessa Bay | url = https://www.researchgate.net/publication/200451598 | journal = Oceanological Studies | volume = 30 | issue = 3–4| pages = 91–101 }}</ref> ''[[Mytilus galloprovincialis]]'', ''[[Setia pulcherrima]]'', ''[[Mytilaster lineatus]]'', ''[[Lentidium mediterraneum]]'', ''[[Idotea balthica]]'', and ''[[Alitta succinea|Alitta (Nereis) succinea]]'' dominate in the spring, while in the summer, the diet consists mainly of ''[[Sphaeroma pulchellum]]'' and ''[[Lentidium mediterraneum|L. mediterraneum]]''. The [[mussels]] ''M. galloprovincialis'' and ''M. lineatus'' are important in all seasons.

In the [[Great Lakes]], where it is invasive, they prey on ''[[Dreissena polymorpha]]'', another Great Lakes exotic from the same native region. A complete lateral line system allows them to feed in complete darkness. In the Great Lakes, they also eat the young and eggs of ''[[Cottus bairdii]]'', ''[[Percina caprodes]]'', ''[[Etheostoma]]'' spp., and ''[[Salvelinus namaycush]]'', among other species, making them a threat to those native populations.<ref>Neogobius melanostomus (Gobie arrondie). (n.d.). Animal Diversity Web. https://animaldiversity.org/accounts/Neogobius_melanostomus/</ref>