| Rob, veriann,
I have a feeling that you guys are missing something. During the daylight hours yes, they display when passing another fish, especially another Tang.
This was taken long after lights out. The tank was completely black, no light except a faint glow from my computer screen across the room. The PB was the only fish drifting around. The rest were snug in the rocks. The PB was totally asleep. (No he didn't have his eyes closed. Only Disney fish can do that.) The shot was taken over and over again because the camera had a devil of a time focusing on the PB. One shot out of about 20 turned out. That's the one above.
CarmieJo,
Thank you.
Dick
__________________ Amphibious Reaching my 70th BD, I realize that I cannot help but grow old. However, I refuse to grow up!!! My wife would tell you, "He may be 70 but, He's going on 17". Life is wonderful with a woman like that. Our web site The Cultured Reef Our Talkingreef Forum The Cultured Reef Forum My tank journal Amphibious' 135 mixed reef. The Cutured Reef toll free number - 888 745-0449  Amblyeleotris randalli commonly called Randall's Goby. | 
