Originally Posted by
WangoTango
http:///forum/post/2681628
Not quite sure where you're going here, but the white balance in the pic is off, so the colors aren't 100% on.
Considering the clam has been under T5 for about 4 years and has continued to grow and have great coloration, I would say that it's doing fine. There is absolutely no reason why clams cannot be kept under T5 given that the setup isn't crap.
-Justin
Because it would end up looking like that. Bleaching sometimes starts in what is called the central area of the clam, which it may have. Then it might become localized, which is has. Then it will start to work its way out, which it has. LOL. It's your clam though. The white balance means nothing when it comes to dark and light or black and white - it merely defines it more.
With the "growth" near the byssal opening, it is most likely impossible that thing has been in that tank for 4 years - I would guesstimate about 16-17 months. Either that or it has probably been EXTREMELY stressed out for a VERY, just VERY, and I mean VERY long time. Think of them as rings on a tree base. They can SOMETIMES queue towards a clams size and age. There are a few things you could do to help it - but seeing as how you aren't seeing what I am seeing and you are determined the clam is fine, post another pic in about 3 months if you get the time.
But see the white "lines" or what look like "scars" on the mantle? The thicker ones. There is a larger one on the left fold third one in. That is called localized bleaching most of the time. I can count what appear to be 6 of them. They are right where the mantle starts to drop down into where the siphons are. There is also a small one directly to the right of the incurrent siphon or mouth; the little thin white one.
Anyone that ever says they have ever been keeping a Crocea under T5s past two years, I always ask for a picture of the front of the byssal "hinge". The thing has localized bleaching, I can't see the central region that well, but it looks like it has centralized bleaching. Plus it starts to get lighter as it goes from the central area to the outer mantle rim, which is generalized bleaching. Don't believe ME? Get other professional opinions.
EDIT: Also if I need another good judge in size for age, I would just look at the star polyps to the left and the regular polyps to the right. I MIGHT grant the star polyps about a 1/4 of an inch based on max size. Then I MIGHT grant the clove polyps or whatever they are, about 3/4 of an inch based on maximum size. The clam is what; 3-4 inches in front of them at max? Putting the clam probably inside of a 3-4 inch marker.