The Caspian gudgeon (''Gobio holurus'') is a freshwater fish species in the family

Cyprinidae Cyprinidae is a family of freshwater fish commonly called the carp or minnow family. It includes the carps, the true minnows, and relatives like the barbs and barbels. Cyprinidae is the largest and most diverse fish family and the largest v ...

. It is a small fish, less than 10 cm, which is distributed in the drainages of the Western

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

basin (

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Terek Terek may refer to: Places China * (), a list of township-level divisions of Xinjiang, town in Xinjiang, China Kyrgyzstan *Terek, Alay, a village in Alay District, Osh Region *Terek, Kara-Kulja, a village in Kara-Kulja District, Osh Region *Terek ...

and

Sulak Sulak may refer to: ;Places * Sulak, Khuzestan, a village in Khuzestan Province, Iran * Sulak, Kohgiluyeh and Boyer-Ahmad, a village in Kohgiluyeh and Boyer-Ahmad Province, Iran * Sulak, Russia, several inhabited localities in Russia * Sulak, Silva ...

river drainages) in Russia and adjacent countries. It is widespread and not threatened, but there is no information about its biology.

References

holurus Fish described in 1976 {{Gobioninae-stub