Yes, everywhere. Definitely. I took every single thing out of the tank one at a time. I even broke my rock formation in half to make sure he hadn't gotten stuck in there. He wasn't afraid of anything! The shrimp always got out of his way. He was a brave little guy.
I talked to the guy at my local fish store and he's convinced Crumpet jumped out and my cat ate him. I guess it's possible, though I'd never seen him jump and the holes on either side of the filter are very tiny. Also, there was absolutely no water on the side of the tank, on the desk, or on the floor.
Some forum members have suggested that something was wrong with him when I got him. Someone noted he looked chubby, but the pics I posted were taken before I'd fed him in my tank.
I guess I'll never know for sure, which is frustrating. I miss him.
Derby -- male
Cleo -- female crowntail