In this study, the effects of different concentrations of Sargassum angustifolium (Agardh, 182 ( extract on the hematological parameters in Common carp were investigated within 14 days. A total of 240 common carp were divided randomly to four treatments (control group without algae extract, 1% algae extract, 10% algae extract and 50% algae extract). Blood samples were taken on days 1, 3, 7 and ...