عنوان مقاله [English]
In this study, length-weight relationship of three populations of fingerling roach (Rutilus rutilus caspicus), wild, farmed and mix were investigated with the fish reproduce in the center of the proliferation of bony fish Syjeval Harber. In order to check the length-weight, 587 sample fish by hand Sachook during the release into the sea. Minimum and maximum total length of respectively 17.14 (farmed) and 73.93 (wild) mm and the minimum and maximum total weight of 0.061 (wild) and 3.198 (wild) g. The mean length and weight in wild specimens, respectively 41.602±0.142 cm and 0.817±0.054 g, farmed 41.476±0.116 cm and 2.107±0.691 combined heat and 38.376±0.128 cm and 2.943±0.500 g. Parameter values b, to wild populations, breeding and combined respectively 2.580, 2.505 and 2.450 was estimated that the amount and probability of close to 3 positive allometric growth pattern for the fish population in the three certificates Gives. The average Condition Factor in wild populations, breeding and combined respectively, 0.900, 0.832 and 0.842 respectively. To results It seems that the growth parameter of wild fish is better than breeding and synthentic populations.