I had one for about 7 months and it died. I will never get another one because frankly, they bumped over all my corals and I don't really feel they belong in a tank. I hand-fed mine (target fed him), but they will eat the scraps.
BE CAREFUL because they aren't the smartest creatures on the planet and will wedge themselves between live rock. I saved mine weekly from that, but after vacation I found mine wedged upside down and that's how the little guy died, imo