Yeah i was wondering how that worked... I know they build their shells as they grow, so how can it be detached? So far hes been alive all day just chilling, sliming around the glass. The 6-line is missing, so nothing in my tank really nips at him. Id think the pygmy angel would, but he hasnt. At foster and smith when I got them the lady threw in a handful of snails and charged me for 10, I ended up getting like 12 with shells and 2 with out, I didnt notice this one until now though, and that was like a month ago.