Oxynoemacheilus ercisianus
Oxynoemacheilus ercisianus, the Van loach, is a species of stone loach endemic to the Lake Van basin in Eastern Turkey.
In 2018, a population of Oxynoemacheilus ercisianus, was discovered in to live among the microbialite in Lake Van. Until then, Alburnus tarichi was thought to be the only fish to inhabit Lake Van.