Hi everyone, I have sort of a brain buster here.... We've had a T. Crocea in our tank for 6+ months now and it's been doing great. Recently, it has been closed up, and ultra sensitive/overly suspicious of movement in the tank. It's also been closing up tight quite frequently, and instead of opening with a nice floppy mantle, it's been half closed with only a bit showing. I've noticed the sides of the mantle are starting to become slightly discolored. I'm assuming due to lack of light from being closed all the time but could it be something else? I'm sort of at a loss here as to what could be wrong. I've read that from time to time clams will close up more and be finicky, but this has been going on longer than 10 days now and I'm starting to worry. The only thing that is new to the tank is an orchid dottyback. However, I haven't heard of these fish to be clam killers, nor have I seen it bother or show any interest in the clam at all. Think this fish could be secretly attacking the clam? Parameters are standard for my tank, and nothing is out of the ordinary. I've also noticed, now that the clam has been closed up, that there's a very healthy white ridge of growth around the outside of the shell. Everything about the clam says it should be healthy, but it's not acting like it. I think kcbrad had a similar experience but mine doesn't seem to be showing any progress and is getting more and more skiddish, not better. Anyone go through this before, and is there anything I should be looking for? I am almost tempted to make an acrylic box for the clam with holes in it, to see if it really is the dottyback bothering it. I'll see if I can get a pic of the clam later this weekend. Thanks for any suggestions you can give!