Lost a 6 line that way. Mad a new hood that fit the tank perfectly. Have a piece of plexiglass over the overflow.....yes he go in there too. Not as bad as the floor, but every tried to get a wrasse out of an overflow?
Had my latest 6 line jump out while I was cleaning the tank. Heard a splash, but didn't think about it. About 10 minutes later turned around, and there he was sitting on the floor. Took about 8 hours, but he was eating that night.