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Tridacna derasa

Discussion in 'Clams - bivalve molluscs' started by cremer9, May 13, 2009.

  1. cremer9

    cremer9 Amphipod

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    I picked up this clam at reef ed i was just wondering if it looks ok i noticed the opening opening up wider than when i got it, it seams to close everynite.Its in a 12 gallon nano going about 10 months 70watt medal hidi running 10 to 11 hours a day. any clam advice would be helpful.
     
  2. Clown-N-Around

    Clown-N-Around Sardine M.A.S.C Club Member

    There are two signs that a clam is not doing well that I know of:
    1) "pinched" or partially retracted mantle - meaning it does not put the mantle all the way out
    2) when they actually start dying, their ability to close starts to fade: they are not responsive in closing when a fish or your hand passes over, or they never close completely

    Since it looks like the mantle is not fully extended, and you report that it closes every night, I would say your problem is of the first variety. Sometimes this is due to predators like pyramidal snails. I can't quite tell, but there might some on the shell in the picture. They pretty much look like grains of rice. Manually removal from the clam, outside the tank, is the least stressful. They will pretty much brush off. You can do a fresh water dip, but that is extremely stressful to the clam, so it might die from that alone if not done exactly right. You may have to do the manual removal periodically. You should also check all of your cleaner snails (turbos, etc.) to see if they have any on them. Usually that is how they get into the tank.

    For clam questions: www.clamsdirect.com, click on forums. It now redirects you to a new set of forums that also have other stuff, but there are plenty of threads to look through on clams and the same clam experts to answer new questions.
     
  3. 68RUSTANG

    68RUSTANG Copepod M.A.S.C Club Member

    Is the clam up against the glass?

    If it is, you may want to move it back a bit.
     
  4. cremer9

    cremer9 Amphipod

    I moved the clam over a bit.When I came home today the clam was over on its side so I placed it back.I checked for predators I have all the cleaner nassarius snails,turbo i see some brown specs stuck to the glass I thought they were nassarius.Ill keep an eye on him.there was a little bubble algae on its shell i picked off.
     
  5. zombiereef

    zombiereef Amphipod

    i would say from the picture that it seems ok. the color is good. doesnt look faded. mantle looks healthy. it isnt gaping. i agree that moving it away from the glass is a good idea.
     

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