Alburnus tarichi

Alburnus tarichi, known as the tarek, pearl mullet, Van fish or Van shah kuli is a species of cyprinid fish, found only in Turkey, where it is the only fish known to inhabit Lake Van. It is endemic to the Lake Van basin. The tarek is the 'jewel' of Lake Van in Turkey. Found nowhere else in the world, this fish thrives in the lake's salty and carbonated waters, which are inhospitable to other forms of fresh water and marine fish.