Big question regarding a bad night in the tank. First, my red flame dwarf angel was hurt and not moving well. She had been hiding out for a couple of days, so I thought she might be sick. I moved her to the refugium, but lost her anyway. My yellow eye tang was shoving her around before I moved her. This morning the tang was eating just fine one minute, then he was dead. No warning. He had been acting kind of strange for a while (he was kind of a spaz anyway) and had been slamming his body into the back and bottom of the tank. No obvious ick, although we had an outbreak over a month ago we now have it under control. After taking a closer look at the tank, our six-line wrasse was missing. My husband found him dead behind a coral, and pretty beat up. He was healthy and happy last night. We think the Tang freaked out and killed them, and then died. My daughter has decided it is "mad cow" fish disease. We have had all these fish for more than 6 months with no prior problems. Anyone have any similar experience, or ideas on what might have happened? Checked the water yesterday, and the parameters were all good with the exception of minor high nitrates. Didn't really like the tang, but the other two were hang-out buddies and much liked. Thanks for any input.