I went to the lfs a couple weeks ago knowing i was going to buy a blue velvet damsel (paraglyphidodon oxyodon). I go in there and find the best looking one they had and bring it home to my arrow crab and other yellowtail damsel. The next thing that happened amazed me. Right when i put it in it and the other damsel started dancing around each other and "standing" straight up and down. As they were doing this the yellowtail damsel darkened from a bright blue to an almost black. They did this for about ten minutes and havn't done it since. Now the blue velvet stays behind the live rock at the back at the tank while the yellowtail swims around the front like he's guarding something and chases away the arrow crab who's 3x the size of him. I haven't spotted any eggs yet but I'm pretty sure therer might be some. Any ideas whats going on?[/i]