An ichthyofaunal amendment with the length-weight relations and condition factors of some endemic and invasive freshwater fishes from Western Anatolia

• Published in: Oceanological and hydrobiological studies 2023-12, Vol.52 (4), p.389-398
• Main Authors: Kurtul, Irmak, Kaya, Cüneyt, Şen, Arda, Özcan, Ceylin, Ercivan, Deniz, Demiral, Kaan, Güngör, Melike, İlhan, Ali, Sarı, Hasan Musa
• Format: Article
• Language: English
• Subjects: growth types; Küçük Menderes River; regression; slope value
• ISSN: 1730-413X; 1897-3191
• DOI: 10.26881/oahs-2023.4.01

In the scope of this study, fish fauna of Küçük Menderes River and its tributaries, updated with the comparison of the recent ichthyofaunal studies, as well as the length-weight relations (LWR) and condition factors (CF) were estimated for 7 freshwater fish species belonging to six families from the river basin: endemic , ; invasive, , , transloce and the native , . The fish samples were collected with various fishnets and DC electro-fishing devices from six stations in 2018 and 2019. The LWR of the fishes was studied based on 379 specimens. The estimated values of parameter b ranged from 2.884 ( ) to 3.176 ( ). The coefficient of determination (R2) was changed between 0.792 to 0.980 for all sampling localities. In the study, Fulton’s condition factor ranged between 0.391 ( ) to 3.080 ( ); the relative condition factor ranged between 0.346 ( ) to 2.746 ( ), respectively. This research is anticipated to contribute valuable insights for the conservation of the species, while also furnishing essential data to inform future fisheries management studies in the region.