A couple of years ago I bought some floating plants (the first time I'd seen any at my LFS) on my way to work on a night shift. I came out of the shop at around 5pm, getting to work at around 6.30. I'd been at work around two hours and remembered the plants I'd literally thrown into my work bag. I took out the poly bag and held it up to the light. Oh s***!!, there's a fish in there. Looking as closely as I could, I could see it was a pencilfish, around half an inch long. Great, it's 8pm, I won't be home until 8am the next morning. What to do?. A sudden flash of inspiration (doesn't happen very often); there's a small kitchen in the office; I got out the washing up bowl and half filled it with warm-ish water and floated the bag, putting a little more warm water in the bowl every hour or so. Eventually the bag steamed up so I had to open it and roll the sides down. When I came to fasten the bag up next morning before going home, I couldn't believe it was still alive. As soon as I got home I floated the bag in the tank before letting him swim into his new home. The next week, I'd been so bowled over by this little character I added another five pencilfish and they're now my faves. I still can't believe he lasted fifteen hours in that bag - and he's still going strong.