Abstract In order to establish the taxonomic and zoogeographic

Abstract
In order to establish the taxonomic and zoogeographic features of the fish fauna of the Büyük
Menderes River basin, fish samples were collected using electrofishing equipment, gill nets,
trammel nets, seine nets and cast nets from 2010 to 2011. Among the samples, 34 (19 endemic
and 6 non-native species) species belonging to 13 families were identified. The most dominant
family in the river and its branches is the Cyprinidae with 20 species. Rhodeus amarus, Büyük
Menderes River has been reported for the first time.