clam not open on one side

[psteeleb]

I noticed last night that my 4" crocea was not extended like normal and mostly closed on one side. today the one side is pulled in. what should I look for?

 

[a4twenty]

pyramid snails, proximity to corals / anemones / etc. on that side, nipping fish

posting a pic may be the best answer.

 

[ev1016]

Look for anything that might be irritating it.

 

[psteeleb]

thanks guys - I'll see if I can grab a picture today when I get home (assuming it's still partially closed). I hope I just irritated it moving stuff around and stirring up a bunch of detritus. I've been re-aquascaping a bunch lately and may have hit it with something.

 

[a4twenty]

just saw your avatar, is that a bicolor??

if so, start watching him.

 

[psteeleb]

<a href=showthread.php?s=&postid=12719663#post12719663 target=_blank>Originally posted</a> by a4twenty
just saw your avatar, is that a bicolor??

if so, start watching him.

yep - that's a bi-color, but he's in a different tank

the clam expired last night. still not sure what it's demise was.

It was fine 3 days ago, then without much indication otherwise becomes very pulled in on one side. Then last night when I go home it was pulled in on both sides. I lifted him out of the sand bed to look for predators but saw nothing. This morning my cleaner shrimp is on him.

I have not noticed anyone picking on it and the other 3 clams I have seem great. I lost another clam about 6 months ago for unknown reasons but it was a smaller crocea and met it's demise over a few days (maybe weeks). The previous loss I suspect was due to a whelk, as I found 3 in my tank prowling around at night.

right now I kind of baffled, I can only suspect I either stirred something up when I was doing some re-aquascaping or knocked off some salt creep and a large chunk fell on the one side of the mantel, burning it and it went downhill from there.

Another thing that did happen this week was my ATO got stuck and over filled the tank with about 10g of fresh RO/DI, dropping the salinity from 1.025 to 1.024 over a 6 hour period. At the time nothing seemed upset about it, but it was later that same day I notice the clam has the mantle pulled in on one side. It's the one side thing that has me thinking more a predator or salt burn.

I also added some new dry base rock the past few days, but nothing else appears stressed in the tank so I don't think it caused anything. I check water parameters later this week, but I don't have any reason to believe things to be off much.

Any other suggestions or thoughts are appreciated,

thanks

 

[a4twenty]

sorry to hear of you loss.

clams require stable params but usually do alright with changes in SG, crocea's are found in tidal pools and sometimes are full exposed during low tide. i wouldn't recommend doing it on purpose ( many have during a FWD ) but i don't think that was your problem.

usually retracted on one side is an indication of something irritating the clam on that side, take a look at what was around the clam.

also check and post all your water params, maybe we can see something that is out of whack.