Is this a Dersa Clam and other help?

[fishkeeprian]

Hello is this a Dersa?

Look pretty good at my LFS, seems to have a good amount of new growth on the shell. I did notice a couple of aptasia on its shell, how would you remove these?
Thanks

 

[smokinreefer]

your pic is sideways and blue, but yes, looks to be a nice derasa.

place the clam in a tub with tankwater and scrub the aiptasia off. that would be the easiest.