Fishy Surprise!

Well what a shock we got today, my other half was cleaning our upstairs tank and took out the pump which he then took outside to clean. He took the top off and put it to one side to clean the bottom half. 20 mins later when he picked the top back up he found a fish inside it! This was no ordinary fish though as we havent seen it for 4 months! We presumed it had died and been eaten but no after 4 months of being stuck in the pump and 20 mins out of the water he drops out of the pump and into a gap between 2 slabs! My other half got him up as quick as poss and hes now doing laps of the tank like nothing ever happened! I´m not sure how long he´ll last but wow what a fighter.