JMHO,but I think they slowly starve to death. Unless you plan on feeding 3-4 times a day. They are constantly searching rock work for something to eat. Mine ate prepared food up until the day it died, but I was only able to feed once a day. I have heard the same story from others. Mine lasted a little over a year. Anytime I found aiptasia on rock or coral in my systems it was delivered to him. Hes would devour within seconds.