Like other scorpions, the Indian Red Scorpion has an open circulatory system, in which blood is pumped by the heart into body cavities, where the scorpion's tissues are surrounded by the oxygen rich blood. Because the Indian Red Scorpion is an invertebrate, its body does not use the protein hemoglobin to transport oxygen throughout the body, and instead uses the protein hemocyanin. Unlike hemoglobin in red blood cells, hemocyanin are not bound to blood cells, and are instead located in the hemolymph, a fluid in the circulatory system of arthropods that contains as much the same components (hormones, fat, sugars, and water) as blood and tissue fluid in vertebrates.