The ratan goby (''Ponticola ratan'') is a species of

goby The Gobioidei are a suborder of percomorph fish. Many of these fishes are called gobies. It is by far the largest and most diverse order within the order Gobiiformes, and one of the most diverse groups of ray-finned fish in general. The subord ...

native to

brackish Brackish water, sometimes termed brack water, is water occurring in a natural environment that has more salinity than freshwater, but not as much as seawater. It may result from mixing seawater (salt water) and fresh water together, as in estuari ...

and marine waters of the

Black Sea The Black Sea is a marginal sea, marginal Mediterranean sea (oceanography), mediterranean sea lying between Europe and Asia, east of the Balkans, south of the East European Plain, west of the Caucasus, and north of Anatolia. It is bound ...

, the

Sea of Azov The Sea of Azov is an inland Continental shelf#Shelf seas, shelf sea in Eastern Europe connected to the Black Sea by the narrow (about ) Strait of Kerch, and sometimes regarded as a northern extension of the Black Sea. The sea is bounded by Ru ...

and the

Caspian Sea The Caspian Sea is the world's largest inland body of water, described as the List of lakes by area, world's largest lake and usually referred to as a full-fledged sea. An endorheic basin, it lies between Europe and Asia: east of the Caucasus, ...

. In the

it is presented by

subspecies In Taxonomy (biology), biological classification, subspecies (: subspecies) is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (Morphology (biology), morpholog ...

''Ponticola ratan goebeli''. It occurs in inshore waters, inhabiting areas with stone or gravel substrates. This species can reach a length of TL.

References

External links

* http://fish.kiev.ua/pages/ukrfishm/ukrfishm79.htm * http://www.grid.unep.ch/bsein/redbook/txt/neogob-r.htm?%20PISCES Ponticola Fish of Europe Fish of the Caspian Sea Fish of the Black Sea Fish described in 1840 Taxa named by Alexander von Nordmann {{Gobiidae-stub