GIGAS or DERASA new pics (shell)

[Nax0]

i put some photos of all wievs of the shell of my tridacna. Can we know if it's a deresa or gigas tridacna?

i hope that with this fotos we have an answer because i have some doubts

THK's

PD: accept confirmation to view images

 

[maxxII]

Its a Derasa Clam....
Gigas clam shells wont close all the way, and the mantle inst nearly as brightly colored as Derasas.
Nick

 

[OrionN]

That is a Derasa. Gigas shell can close complely when they are young. When they get to 6+ inches or so, then they cannot close completly. Gigas is the only species with no tentacle lined around the incurrent syphon. In your picture, there is clealy manty tentacles lined the incurrent syphone.
Here is a picture of my T. gigas

 

[Nax0]

Thks Minh, your aclaration its good.

 

[Julio]

sweet gigas!!