One of the most entertaining livestock in my aquarium, paired with a watchman goby and the two are in heaven. Just keep in mind, this guy will shift sand 24/7/365 - was tempted to take him out because he would cover my ground zoas with sand or move them but I didn't have the heart to take him out, plus, now he picked a section of the tank so he's just moving sand from one side to the other where nothing is on his way. Love this guy!