You will receive 10+ of isopod in the ad. I always put a couple more in case of any DOA. Milk backs have an appearance of a white/off white back with varying degrees of white coloring the rest of their body. This species is extremely active and is very easy to take care of. Our Isopods are raised on a diet consisting of fresh vegetables and freeze-dried minnows as this species loves protein. They make a great addition to any vivarium or terrarium. We ship our isopods on Monday, Tuesdays, and Fridays to make sure that they arrive alive and well.