Tale of a koi found on a rock
Spouse has a rock ledge sticking out about nine inches above the water level. She goes out and found what appears to be a dead koi on this rock ledge. The fish was only about four inches, length less than half the distance to the ledge, and she wonders how it got there. She calls me to come look at this confusing situation. We muse over it for a bit and I pick it up. It feels stiff.
Having grown up on a remote farm and having worked in a research lab, out of curiosity I decide to do a necropsy. I see no evidence that it has been handled by some rare critter. I start to push tip of some sharp scissors into the belly of the fish and I feel a reflex. I hold it under water and a gill moves a bit.
So we put it in a container of pond water and two hours later it is swimming around normally. Another two hours and she releases it back into the pond. It appears to be OK twelve hours later.