stupid clam question re shell: newbie

[Sk8r]

My crocea came in with a 4-5 inch shell, healthy, etc., opening very well in a reef tank. Since I've had it, about a month, it has grown a kind of scalloped shelving under the mantle. I can see that perhaps the shell itself is composed of these kind of scallops, but does that pristine white edge (about 1/3 inch straight outward) just break off as the clam grows, or does it get resorbed and laid down again? Or is this something it shouldn't be growing?

 

[mbbuna]

most Croceas are wild collected. in the wild they are found embedded in the rocks. the shutes you are seeing are the way the shell naturally grows but in the wild would be rubbed off against the rocks from the clam opening and closing.

 

[Sk8r]

Ah! That's really neat-looking. Shutes, eh? Mine's shell is a nice alternation of blue and purple ridges, so far; with the shining white of those projections, it may be very good-looking indeed.

Thanks for taking the trouble!

 

[SuperSizeMe]

Is that why you see max. clams like that because they're not rock type clams?

 

[mbbuna]

<a href=showthread.php?s=&postid=7450910#post7450910 target=_blank>Originally posted</a> by SuperSizeMe
Is that why you see max. clams like that because they're not rock type clams?

Maximas do bore also. most of the maximas for sale are cultured (except the teardrop)