clam Help

[jjoos99]

I have a clam that I have had for several years now. I bumped into it the other day while working in the tank. I didnt think the bump was bad at all. It hasnt expanded out good for several days now and today I noticed a very fine black thread coming out of what I would call it's outlet pipe. Any opinions out there as to what might be going on?
Thanks
Jeff

[DNickell]

Try posting in the Clams forum. I bet some of the hard core clam fans there will be able to help.