I used to have a fish that for some reason was delivered in a plastic cup free with some fried chicken I ordered several years ago. It came with a weeks supply of food for the fish too. A bit weird as I had not asked for a pet fish and just some chicken, but I fed it and grew attached to it. I bought it food and fed it but it died several months later. I was mortified when I came home one day and he was dead in his bowl which I had bought for him. He was a tiny thing no more than a cm and a half long. I took him outside and buried him pledging never to get another pet as death is all too tragic. I don't know if he was a he, I am just assuming there. Harmless little bugger swimming around all day.