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Swimming Decorator crab

I just looked at the tank (behind me) and this decorator crab is swimming at the surface. No he is not dead. How cool is that?
He can do that because he decorated himself with bubble algae, which is filled with air.
I wonder if he knows thats why he is floating. I had to push him down to grab on to a rock.
I took this from the surface, down

Here he is where he is supposed to be.

  1. Paul B's Avatar

    Some thoughts on mandarins

    by
    Paul B
    , 01-11-2013 at 02:06 PM (Swimming Decorator crab)
    Mandarins are not like most fish we keep. Their digestive system is more like a seahorse or pipefish. They don't have a real stomach and can not store food as we, and most fish can. You can tell how often a fish has to eat by the size of it's mouth. A mandarin has a tiny mouth which is not designed to take a big mouthful of anything at any one time. They are also not designed to bite pieces off larger food items.
    A mandarin was designed to eat pods and little else. We as aquarists tend ...
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