To study the morphological variation of Capoeta saadii, 15 specimens from Maharlu River (Maharlu lake basin), 15 from Shapour River (Persis basin) and 15 from Kor River (Kor river basin) were collected. In the Lab, a total of 20 morphometric traits were measured using a digital caliper. Then, standardized data were analyzed using one-way ANOVA analysis, Duncan grouping, principal component anal...