''Paracobitis hircanica'', the Hircan crested loach is a species of

stone loach The stone loach (''Barbatula barbatula'') is a European species of fresh water ray-finned fish in the family Nemacheilidae. It is one of nineteen species in the genus '' Barbatula''. Stone loaches live amongst the gravel and stones of fast flowi ...

is found in tributaries of the Gorgan River,

Iran Iran, officially the Islamic Republic of Iran (IRI) and also known as Persia, is a country in West Asia. It borders Iraq to the west, Turkey, Azerbaijan, and Armenia to the northwest, the Caspian Sea to the north, Turkmenistan to the nort ...

. This species reaches a length of .Mousavi-Sabet, H., Sayyadzadeh, G., Esmaeili, H.R., Eagderi, S., Patimar, R. & Freyhof, J. (2015): ''Paracobitis hircanica'', a new crested loach from the southern Caspian Sea basin (Teleostei: Nemacheilidae). ''Ichthyological Exploration of Freshwaters, 25 (4): 339-346.''

References

hircanica Fish of Asia Fish of Iran Taxa named by Hamed Mousavi-Sabet Taxa named by Golnaz Sayyadzadeh Taxa named by Hamid Reza Esmaeili Taxa named by Soheil Eagderi Taxa named by Rahman Patimar Taxa named by Jörg Freyhof Fish described in 2015 {{Nemacheilidae-stub