Paul watched over Billy the Fish’s last moments. Upset by Billy’s state, he was just resolved on some form of euthanasia when the fish came to, had its last lucid moment, stared Paul directly in the face, shook all of its muscles at once and expired, rolling over onto his side.
The fish tank is dark tonight, the pump hums no more. The clock in the dining room has stopped.
Niles's Blog 
I’m very sorry for your loss :(However, the last part of your post made me think of the song from the Sound Of Music “So Long, Farewell….” etc. So I watched it on Saturday.If ever there was a film for cheering yourself up, *surely* it’s the Sound Of Music.
I don’t think I’ve ever watched it all the way through.We missed Singalonga Sound of Music when it was at the Royal Centre recently.
Ah billy the fish, we hardly knew ye…