Taxonomic revision of genus squalius distributing in Turkey

In this study, species belonging to the genus Squalis have been investigated in terms of taxonomy in Turkey. Although there have been studies carried out in various basins, no explicit revision has previously been performed. Therefore, this study is of importance for the freshwater fauna of Turkey. According to the results of this study, there are 20 species distributes in Turkey. These are: S. adanaensis, S. anatolicus, S. aristotelis, S. berak, S. cappadocicus, S. carinus, S. cephaloides, S. cephalus, S. cii, S. fellowesii, S. kosswigi, S. kottelati, S. lepidus, S. orientalis, S. orpheus, S. pursakensis, S. recurvirostris, S. seyhanensis, S. semae and S. turcicus. In this study, species of chub belongs to Aquatic organisms collection of Recep Tayyip Erdogan University, Faculty of Fisheries and Aquatic Science department and specimens collected throughout the fieldwork took place between 2015-2017 from entire Turkey have been compared morphologically. Additionally, this study constitutes the first record of S. agdamicus in freshwater fish fauna in Turkey. Furthermore, stream Bolu populations and Kızılırmak-Yesilırmak populations are morphologically different from each other and also from the other species distributing in Turkey, thus both populations are considered to be new species that have not been identified yet.