Length- weight relationships and comparison between morphological features of Zagros tooth-carp, Aphhanius vladykovi Coad, 1988 (Actinipterygii: Cyprinodontiformes) in upstreams of Karun River in Chaharmahal-o- Bakhtiari Province

In order to estimate the length- weight relationships and variations in the morphological straits of Aphanius vladykovi¡ 60 samples were caught from Madar-Dokhtar (mean standard Length: 32.71±4.01) and Ordoval springs (mean standard length: 30.72±3.92)¡ during the fall season (30 specimens for each location). The growth pattern in Gandoman was negative allometric for both males (b=2.06) and females (b=2.53)¡ while in Naghneh the growth pattern was Isometric and positive allometric for males (b=3.20) and females (b=3.46)¡ respectively. The condition factor value (CF) indicated the better nutritional conditions in Gandoman compared to Naghneh (P