1. Do you have fish in your tank that allows you to PET them?
I have clownfish. I would love to know what universe to go to where they would allow you to pet them, instead of viciously trying to rip your arm apart the moment they see you enter the room.
But I used to have some freshwater fish that would not only let me pet them, but hand feed them. But that was many years ago... I miss my Black Ghost Knife and my Fire Eel.