question about a dying clam.

[gulfstream]

I've been keeping clams for a bit over a year now..
and have lost few here and there!!
but,Iam puzzled about a large Squamosa which has retracted its mantle to the point to which I think it will dye.
to make the story short, I bought a fairly large Maxima on the weekend from a tank which was being taken apart. (healthy tank)
It got climatized and I put it close to the Squamosa,But I noticed the Maxima spiting a sort of greenish liquid which landed on the Squamosa,ever since then the Clam has not looked the same.....
Is there such a thing such as chemical warfare between Clams?
and is there clams which cannot be combined with others in a tank.
thanks.
PS. Can't post pictures..Not enough posts.

[BLKTANG]

Did you check for pests?

[gulfstream]

I would like to think there are no pest
in my tank or the one taken apart....
considering the Squamosa has been in my tank for a bit over 5 months....and the maxime in the other tank for 2 years....However he did not make it overnight!!!
it opened up completely......and the culprit maxima is doing just fine..Figure!!!!!
what type of pest or specimens would kill clams,now that you have brought that topic?
cheers.

[skinz78]

Can you post pic's on another site and give a link? Pests such as flatworms, very large bristle worms and pyramid snails can kill clams.

What lighting do you have?
What fish and inverts do you have?
What are your params?
What do you dose and how do you add it?

[cfw1199]

+1 skinz