The Department of Physiology and Biochemistry of the ISRI is equipped by Histology, Ecophysiology, Hematology and Biochemistry laboratory facilities. Indeed, skilled senior experts are conducting research projects based on ISRI research plan.Artificial reproduction, sexing, tissue pathology, nutritional physiology, evolutionary process of tissues, research on ecophysiology, reproductive physiology under natural and breeding conditions, and the possibility of oocyte and sperm extraction, osmotic and ionic regulation system development, immunophysiology, histology and pathology, hematology and biochemical issues were subjects of ISRI Physiology and Biochemistry department activities to approaching answers for diverse relevant questions.