hrmrmrmrmm. Haha, Im confused. My TA today said the ones she's seen are in masses in caves and definitely DO emit light, especially when you disturb them. She is known around the museum as the "Bivalve girl" so I definitely trust her, but she could be talking about something else. Next time I'm in my fish store I will set up camp next to this guy and see what the hell he's doing.
Peace, and thanks for the help. I don't think this guy is bound for my tank, but I am still curious what is going on.
Jimmy