Zebra Hermit Crab behaving oddly

Discussion in 'Inverts' started by smackrock, Oct 21, 2009.

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  1. smackrock

    smackrock Coral Banded Shrimp

    Joined:
    Sep 23, 2009
    Messages:
    361
    Location:
    Monroe, CT
    Hi

    I bought a Zebra Hermit crab a little over 3 weeks ago and its been very active moving all over the tank and switching shells sometimes twice a day, but suddenly then 2 days ago the crab sat in a little cave like area under a rock and stopped moving for almost the whole time. I picked up the shell and moved it yesterday thinking he was stuck, but after i moved him, he got up and moved right back into the same spot and then stopped moving again. I don't really get it but maybe someone else has observed this behavior in hermit crabs?

    None of my other fish(1 yt damsel, 2 clowns, 1 lawnmower blenny) are showing any issues.

    Thanks in advanced!

    Water levels:
    Ammonia: 0
    Nitrite: 0
    Nitrate: 3-5 ppm (I did a 10% water change afterwards but that is still far below any dangerous amount.)
    Ph: 8.2-8.3
    Salinity: 1.023
     
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  3. anpgp

    anpgp Dragon Wrasse

    Joined:
    Jun 30, 2009
    Messages:
    2,160
    Location:
    Denver, CO
    He's probably just molting, give him some time.
     
    1 person likes this.
  4. cdeboard

    cdeboard Montipora Digitata

    Joined:
    Apr 16, 2009
    Messages:
    1,054
    Location:
    Grayson, KY
    I would say molt as well.. especially if he has been switching shells around.
     
    1 person likes this.
  5. smackrock

    smackrock Coral Banded Shrimp

    Joined:
    Sep 23, 2009
    Messages:
    361
    Location:
    Monroe, CT
    phew! That explains why he's in a large shell compared to his size. Thank you for that news! k+
     
  6. s10lowrider1994

    s10lowrider1994 Feather Duster

    Joined:
    Oct 18, 2009
    Messages:
    234
    Location:
    Ashburn, VA
    More then likely about to shed its exoskeleton, give it a few days and it should be just fine.