Ponticola cyrius, the Kura goby, is a species of gobiid fish endemic to the Kura River in the southern Caucasus countries of Georgia, Turkey, Iran and Azerbaijan.Brian W. Coad Freshwater Fishes of Iran (accessed 18 Feb 2015) It reaches a length of SL. It lives in the upper parts of the Kura River, Massuleh River and the Pasikhan River and in the Anzali Mordab (Iran). Downstream in Kura it is replaced by Ponticola gorlap.
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