This study has been executed to elucidate the effect of different levels of garlic ( Allium sativum) and black seed ( Nigella sativa ) in fish diet of common carp Cyprinus carpio L. on the productive performance, some components of blood cell protein, glucose concentration, cholesterol concentration and total protein concentration on the blood plasma.This study has been executed for a period of 8 weeks after an adaptation period of 20 days from 28 September 2013 to 23 November 2013 in the fish laboratory of Animal Production Department, Faculty of Agricultural sciences/ University of Sulaimani, Kurdistan region, Iraq.