Bighead goby

Bighead goby
Bighead goby
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Perciformes
Suborder: Gobioidei
Family: Gobiidae
Subfamily: Benthophilinae
Genus: Ponticola
Species: P. kessleri
Binomial name
Ponticola kessleri
(Günther, 1861)
The range of the bighead goby
  • Gobius kessleri Günther, 1861
  • Gobius platycephalus Kessler, 1857
  • Neogobius kessleri (Günther, 1861)

Bighead goby, or Kessler's goby (Ponticola kessleri) is a species of fish in the Gobiidae family. The bighead is a Ponto-Caspian relict species. It inhabits the fresh and oligohaline waters, with mineralisation from 0-0.5‰ up to 1.5-3.0‰.



This species has a big flattened head, strongly expended upper lip, prolonged-conical body and thickened anterior. The mandibula is longer than maxilla. It reaches 22 centimeters (8.7 in). A triangular dark spot is visible near the caudal fin. The collar of its abdominal sucker has blades. The sucker does not reach the anus. It is red- or grey-brown with 5 transverse lines on the back, one of which is on the basis of the caudal fin. The head has light round spots with a white margin on sides. The basis of the pectoral fin has wave-shaped brown spots, odd fins have lines of black spots.[1]

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 fraenum 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.[2]



It is present in lagoons and estuaries of the north-western Black Sea, near the Bulgarian coast, especially in lakes Mandra, Vaya, Varna, Beloslavsko.[1] In the Danube River the original distribution of the bighead goby reached Vidin and was common in the lakes of the Danube delta. It inhabits the rivers Dniester up to Kamianets-Podilskyi, small rivers Zbruch and Bystrytsia. Dnieper up to Dnipropetrovsk, also in the Southern Bug River.

The bighead goby was recorded as non-indigenous species in the Slovak section of the Danube River in 1996,[3] and until 2004, this species had the widest density and distribution among the four Gobiidae species.[4] In the Danube River basin, species is also mentioned as non-indigenous in the Tisza River[5]. In the Upper Danube it was registered in Austrian and German parts up to the City of Straubing[6][7]. During 2000-2002 рр. this species was registered in small streams of the Black Sea coast of Eastern Turkey[8] Since March 2009 the fish is registered in the North Sea basin, in the Waal River, the Netherlands.[9] 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.[10]

Young Bighead goby from the Dniester Estuary, Ukraine


In the Dniester Estuary the bighead mostly eats fish—up to 92% by weight. The crustaceans (Corophium chelicorne, Paramysis intermedia) also provides up to 7% of its diet. Molluscs and polychaetes have less importance (2 % each).[11]

Predators and parasites

The bighead plays an important role in the diet of predatory fish, such as zander.

In the Dniester Estuary the bighead goby hosts parasites such as trematodes Nicolla skrjabini and larvae of nematodes Eustrongylides excisus.[12] In the Middle Danube this goby species supports 33 species of parasites. The core of the parasitefauna are acanthocephalans Pomphorhynchus laevis, glochidia of molluscs Anadonta anatina, and nematodes Raphidascaris acus.[13] The bighead goby host the larvae of invasive Far Eastern nematode Anguillicoloides crassus.

In the Austrian sector of the Danube, 5 parasite species are registered:[14] infusoria Trichodina sp., parasitic crustaceans Ergasilus sieboldi, trematodes Diplostomum sp. and N. skrjabini, and also acanthocephalans Acanthocephalus lucii.

Look also


  1. ^ a b Smirnov A.I. (1986) Perch-likes (gobiids), scorpionfishes, flatfishes, clingfishes, anglerfishes [in:] Fauna of Ukraine, Vol. 8, No 5, Kiev: Naukova Dumka, 320 pp. (in Russian)
  2. ^ Froese, Rainer, and Daniel Pauly, eds. (2006). "Ponticola kessleri" in FishBase. April 2006 version.
  3. ^ Stráňai I. (1997) Neogobius kessleri v Dunaji. Poľovníctvo a rybárstvo, 49(8): 33.
  4. ^ Jurajda P., Černý J., Polačik M., Valová Z., Janáč M., Blažek R., Ondračková M. (2005) The recent distribution and abundance of non-native Neogobius fishes in the Slovak section of the River Danube. Journal of Applied Ichthyology, 21: 319–323
  5. ^ Harka Á., Bíró P. (2007) New patterns in Danubian distribution of Ponto-Caspian gobies – a result of global climatic change and/or canalization? Electronic Journal of Ichthyology, 1: 1-14.
  6. ^ Wiesner C. (2003) Eingeschleppte Meeresgrundeln in der Österreichischen Donau – Gefahren und Potenziale. Am Fischwasser, 2: 29-31.
  7. ^ Seifert K., Hartmann F. (2000) Die Kesslergrundel (Neogobius kessleri Günther, 1861), eine neue Fischart in der deutschen Donau. Lauterbornia, 38: 105-108.
  8. ^ Balik S., Turan D. (2004) A first record for the bighead goby (Neogobius kessleri Günther, 1861) along the Turkish eastern Black Sea coast. Turkish Journal of Zoology, 28: 107-109.
  9. ^ van Kessel N., Dorenbosch M., Spikmans F. (2009) First record of Pontian monkey goby, Neogobius fluviatilis (Pallas, 1814), in the Dutch Rhine. Aquatic Invasions, 4(2): 421-424.
  10. ^ Borcherding J., Staas S., Krüger S., Ondračková M., Šlapanský L., Jurajda P. (2011) Non-native Gobiid species in the lower River Rhine (Germany): recent range extensions and densities. Journal of Applied Ichthyology, 27: 153–155.
  11. ^ Strautman I.F. (1972) Pitaniye i pishchevyje vzaimootnoshenija bychkov (sem. Gobiidae) Dnestrovskogo limana. Vestnik Zoologii, 4: 35-38. (in Russian)
  12. ^ Kvach Y. (2004) The metazoa parasites of gobiids in the Dniester Estuary (Black Sea) depending on water salinity. Oceanological and Hydrobiological Studies, 33(3): 47–56.
  13. ^ Ondračková M., Dávidová M., Blažek R., Gelnar M., Jurajda P. (2009) The interaction between an introduced fish host and local parasite fauna: Neogobius kessleri in the middle Danube River. Parasitology Research, 105: 201–208.
  14. ^ Mühlegger J.M., Jirsa F., Konecny R., Frank C. (2010) Parasites of Apollonia melanostoma (Pallas 1814) and Neogobius kessleri (Guenther 1861) (Osteichthyes, Gobiidae) from the Danube River in Austria. Journal of Helminthology, 84: 87–92.


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