As the dominant fish species in the perpetually cold waters surrounding Antarctica, icefish are notable for the unique physical adaptations that allow them to live where they do. The temperature of saltwater can drop below the freezing point of freshwater without solidifying, so icefish have evolved a type of glycoprotein antifreeze in their bodily fluids. Some icefish have demineralized bones that make them more buoyant than others. How are some icefish able to survive without red blood cells? Discuss