Mine... was when our tropical pond had a leak, so we took out the lining in the middle of july. my husband found all of the cichlids except one. He was the dominant male, so I didnt think he had gotten eaten, but maybe something happened.
when my husband and i were pulling apart the two liners, two hours AFTER we had taken it out of water, my husband noticed a bubble inbetween the two. He put his hand on it, and swooooooooooosh, it went further down the inseam. He put his hand on it again, and swooooooooooosh back down the other side. He decided to just take apart and fix the bubble. When he lifted the two apart, there was our pink convict... STILL ALIVE!!! there was a water bubble that he was chillin out in i guess.... he is doing great to this day, and has tripled in size!