I have an established 75 gallon freshwater w/ pearl and dwarf guoramis, assorted tetras, a pleco, corys, and platys. A few weeks ago i introduced 2 quarter sized angels and one died within a few days. Keep in mind that the other is still doing well and is growing steadily. My LFS gave me a new one which only lasted about a week. I decided to try another, more exclusive store only to have the same experience. I have now lost a total of 4 angels within the month and only have the 1 remaining. I am wondering if they are being harrased when I am not around by the alpha angel. I se him/her being a bit agressive with the other angels but it's usually around feeding time. Sadly, I may give up on angels and just keep the one I have. I have read they are schooling fish but this one seems perfectly content on it's own as it is always out in front of the tank and follows you when you walk by! Any thoughts?