Do your fish wedge themselves so far in your rock-work they actually get STUCK?

[kien]

I can't say that I've ever noticed this ever happen to me but as I think about it, this would totally explain a lot of mysterious fish disappearances! For some fish I think it would be totally conceivable for them to cram themselves into a sleeping or hiding spot, and then raise a fin to help wedge themselves in, but only to find out later that they are stuck and maybe can't lower that fin, and maybe there's no room to move forward to help them release that stuck fin. Fish are not that smart and usually the instinct for protection overcomes common sense.