Another new clam.(Maxima)

BLKTANG

New member
She's a beauty!

IMG_0084.jpg
 
<a href=showthread.php?s=&postid=8389531#post8389531 target=_blank>Originally posted</a> by capefear
it looks like a crocea to me


:eek1: really wow.i will try to get a pic of the shell today im shocked.I thought crocea had a smooth shell?
 
thats why im saying its an aquacultured crocea. The shell on your obviously is not smooth.

Crocea get their smooth shell when the bore into rock. The shell "wears out" for lack of a better term, thats why when you see a wild crocea their shells are worn down to just the top bit below the mantle (obviousloy that part did not end up in the rock yet).

Aquacultured crocea dont get to bore into anything, hence their shells are not smooth.

hope it makes sense, its late here in Oz.
 
no way. that is a maxima. mantle color is a very poor determinant of species, whereas shell is far better. Those scutes are far too big to be croceas. How big is the byssal opening?

metal maniac, you are theoretically correct, but my crocea in my tank has grown doubly in the past 2 years, and all the new shell growth is just as smooth as the previous, and its not boring into limestone.
 
<a href=showthread.php?s=&postid=8392590#post8392590 target=_blank>Originally posted</a> by OrionN
take a picture of the byssal opening. this will settle this question.


sorry but what is the "byssal opening"
 
I think it's a maxima - but I'll also say that there are some croceas that have scutes just as big a a maxima's, and there are also some maximas that completely lack scutes. There are also some maximas that are rather short, and some croceas that are relatively elongated. The byssal opening of both species can be variable as well.

I didn't think that even a few years ago, but after visiting some clams farms and looking at 1000's of specimens, I've seen it all...

They can be VERY hard to tell apart at times.
 
Back
Top