Abstract
A multivariate statistical analysis was performed on the morphological characters of four populations of Aphanius vladykovi. Factor analysis revealed that interlocality morphological variations consist of characters such as total length, predorsal length, preventral length, preanal length, head length, head width and head depth. By using one way ANOVA analysis of 38 meristic and morphometric characters examined for males and females, 33 were significantly different (p<0.05) among all populations. Three localities for Aphanius vladykovi were found for the first time. The species is mainly carnivorous and generally has the same diet at all four stations examined. The gut contents consisted mostly of Diaptomus, Daphniae and filamentous algae. This fish forms schools, swimming and feeding together. Teeth are found in both jaws of the superior mouth in a single row and are tricuspid.
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