Hitchhicker ID Please

[rossim]

Dr. Ron,

New to the site. I hope I'm posting this in the correct spot.

Ok.... LR just set up over the weekend and tonight I just saw something moving around. Looks like some type of snail, but its shell is a little unusual. Here is a pic of a couple of "open nut shell" looking things in the tank. The snail looks like he is in one of these that are just cracked a little.

LR is fiji rock

http://reefcentral.com/gallery/data/500/64697snail1.jpg

Here is a pic of the snail...

http://reefcentral.com/gallery/data/500/64697snail2.jpg

and another... sorry about the quality... batteries were running low..

http://reefcentral.com/gallery/data/500/64697snail3.jpg

he finally made it to the little cave...

http://reefcentral.com/gallery/data/500/64697snail4.jpg

I've also heard that is could be a muscle or a clam??? It is actually climbing up the rock in the pictures. It's not on the sand bed.

Thanks in advance!

[rshimek]

Hi,

It is a small clam, possibly in the genus Arca. They are common hitchhikers on live rock. They generally perish after a few months as there is generally not sufficient plankton in reef aquaria to keep them alive.

:D

[rossim]

Thanks for the quick reply! :)