This species has a big flattened head, strongly expended upper lip, prolonged-conical body and thickened anterior.

[2] This species is distinguished from related Black Sea basin inhabitants by the following: 75–95% of its length is between its origin and anus; ctenoid scales completely cover the predorsal area and nape; pelvic disc fraenum with angular lobes, Distinguishing characteristics include a frenum with length 1/6-1/2 of its width at base, midlateral series scales 68-72 +3-4, a snout length 1.5-2.0 times its eye diameter, that its first branched ray of second dorsal is about as long as penultimate ray and that the posterior part of first dorsal is without a black spot.

[3] It is present in lagoons and estuaries of the north-western Black Sea, near the Bulgarian coast, especially in lakes Mandra, Vaya, Varna, Beloslavsko.

[10] At the German part of the Lower Rhine, between the cities of Cologne and Rees, this species consists of 52% of gobies catchments in 2009.

In the Dniester Estuary the bighead goby hosts parasites such as trematodes Nicolla skrjabini and larvae of nematodes Eustrongylides excisus.

The core of the parasitefauna are acanthocephalans Pomphorhynchus laevis, glochidia of molluscs Anadonta anatina, and nematodes Raphidascaris acus.