Structure of Fish Community For South East Al-Tharthar Lake in Salah Alddin Province/Iraq
Abstract
Study structure of fish assemblages at Al-Tharthar Lake during the period between October 2012 to September 2013. Fifity fish species were recorded, belonged to the Four family. the species Cyprinidae and (11) species, Siluridae Tow species, Mugilidae and Poeciliidae One species. the total number of individual fish collected were (490) with a total weight (203968.99) g. The Cyprinus carpio was dominated collected species by number and weight, with116 (23.67) % of the total catch, and weight 80211.3 g. (39.33)% of total weight. The percentage of the number of each species were varied with months.Similarity index shows that the maximum value (90.91) % between (February and March) and (August and September) in the first station, and by with 100 % similarity between (October and June) and (May and July)in the second station. Values of diversity indexes were ranges as follow: The values of richness (D): with mean 1.34,diversity (H): with mean (1.33) and for Hn for with mean (0.41), relative diversity (HR): HRb for with mean (0.36) and for HRn for with mean ( 0.81) and evenness (E): En for with mean ( 0.81) and for with mean ( 0.14).
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