Turan's goby (Ponticola turani) is a Ponto-Caspian species of goby endemic fish native to Turkey where it is only found in the Aksu Deresi stream. This species is found in a fresh water stream with a substrate of rounded pebbles. Males of this species can reach a length of 8.8cm (03.5inches) SL while females only reach 8.3cm (03.3inches) SL.