color change question

xxtriggermanxx

New member
this frag of zoa's entered my tank (all looking the same) now they look like this . what would cause this ? i guess you have to take my word that they all looked alike.
tankpictures107.jpg
 
I should say that they started out like the one in the bottom right. I guess i just don't understand why the skirts on just a few changed from light green to brown. i don't beleive it's "bleached"
 
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