I had a female fire red dwarf gourami go missing while I was away on end-of-year vacation. I've been back since Jan 4, and hadn't seen her the whole time - I even tore apart the tank (50 gal) and removed every item that wasn't substrate or a live plant, and still I couldn't find her.

Just tonight, she showed up again, just casually swimming by while I was doing my daily inventory. WHo knows where she's been all this time.