Name this Bivalve???

No it's still alive. I thought it was dead when I bought the rock. I noticed it clamp shut and move toward the rock when I had just put the rock into the tank. He is covered in algae. It is still alive, but more larthgic than it was when I first noticed it moving. He/She doesn't seem to respond as much when desturbed (or maybe I am just being paranoid) I have been feeding the tank with phytoplankton and supplimenting with calicum, but I am just worried I am not doing enough. He is still alive, but I just don't know how to determine how well he is doing. Anymore thoughts?
 
Interesting. Maybe a barnacle or tunicate?

Hopefully you'll get more responses throughout the day and early evening.

Good luck with it either way!
 
Yeah to add more detail to the guy, he has coarse hairs around the top of the lip and shaped like, for the lack of a better description) wooden dutch shoe. :-/ it opens at the top to feed I am assuming) He is anchored to the live rock by a foot. He has some interesting markings on his shell that you can barely make out due to the algae growing on the shell. I want to think he is some kind of oyster, but Ijust don't have a clue...

Thanks
 
Probably some kind of oyster. I have ~15 or so of a similar looking bivalve on one of my rocks. I thought they were all dead too, then I noticed what look like fringed ducts coming out of them. I've had them since October of last year, and have only lost one that I know of. I feed DT's a couple times a week, for pods and any random filter feeders that may be in the tank.
 
Nope, one day its shell was just unhinged and gaping open. I *think* it was before I started feeding DT's, but I'm not positive. They came on some FL rock, along with some neat tunicates, sponges, micro brittles, cup corals, and a few species of pest algae. Everything but the algae is still alive :)
 
Nice. Sounds much like mine. Mine came from FL with Spagetti worms, feather duster worms, sea cucumbers, rock anemones, and two clams....thank goodness the rock was bumpin with life...made the nitrogen cycle process much more entertaining.
 
Although I cannot help you with an ID on that bivalve, I too have something that looks exactly the same. My rock was supposed to be Fiji, came from Florida so I don't know exactly where mine came from(looks nice though). It has a little white/cream foot that I only see when I can flip it upside down and it tries to right itself.
 
It's an Ark Clam, family Arcidae. Hard to tell which species. They seem to be hardier than the mussels and oysters that often come in as hitchhikers, but I'm not sure what or how much you'd have to feed it to keep it alive long-term. Good luck!

Cheers,


Don
 
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