my 4 angels are pratically ripping eahother apart viciously (well, actually, no damage has been done yet), but they are chasing at eachother and nippin. I have no idea what is wrong, but it seems like all the fish in my 33gal are having a war or something. Everyone's fighting!!! What the hell? nothing's wrong with the water, and they are full and everything. I just did a water change. Anybody have any ideas?? They will be moving to a bigger tank soon, but I don't think that that's the problem.