I've searched in and under and through every place in her room, and it just. isn't. there.
We are mystified.
My own theory, that the fish was a Secret Agent who had completed his mission and teleported back to his Masters to make a report, was greeted with derision by the children.
The Princess advanced the opinion that burglars broke in and stole him.
Mr 10 was too busy playing SmashWarKartCraft or something, and didn't have any alternative ideas to offer.
In news that may or may not be related, we seem to have a lot of cats.
That's not all of them, I know there are more. They hide when they hear the vacuum cleaner start up.
I think my daughter is a Junior Crazy Cat Lady.