i had my 8 inch albino pleco get stuck inside a piece of artificial grapvine. i assumed he was dead so i put the piece outside and was going to deal with it after the water change. i then went to dump a bucket of water and saw him thrashing around so i threw him back into the tank then demoed the drift wood to free him. he is still alive and well almost a year later
had this happen, fortunately I was still cleaning when my fish fell out of the stump decoration and start flopping around on the floor, he survived. lol