The scratch of a thumb on a frosty mirror, no originals available for this one – the sun would not let it live.
I thought the fish had frozen to death, there was a leak in the liner, the hosepipe was frozen but hey, they survived so I treated them to a bigger environment. I dug deeper & bought a good quality liner. Fish are intelligent,our knowledge is limited on their grasp of quantum mechanics.
if time really is a river then they might well have a better grasp of quantum mechanics than we thought!