Ladigesocypris

Ladigesocypris is a small fish endemic to the southern Aegean basin. It is the sole species in the genus, closely related to Squalius and Petroleuciscus . Some authors have treated Ladigesocypris as a synonym of Squalius . This view is not supported by all molecular analyses, which are inconclusive. While some studies place Ladigesocypris within Squalius, others place the species close to Petroleuciscus, suggesting that Petroleuciscus might be a synonym of Ladigesocypris . The two genera are only distinguished by an incomplete lateral line in Ladigesocypris (vs. complete in Petroleuciscus). Previously, three species of Ladigesocypris were recognised. However, L. irideus from Anatolia cannot be distinguished from Greek L. ghigii, and L. mermere from Lake Marmara was found to be a synonym of Petroleuciscus smyrnaeus .