Hi, I have a 29 gallon tank currently with 2 Jack Dempsey's, 1 Midas, and 1 Blood Parot. The water is around 79-80 degress. When I was first adding fish into my tank I had 4 fish, then after about a month a smaller fish in my tank that I can't identify, died because I assume it was attacked by my blood parot, jack dempsey, and midas. Those 4 fish were getting along together great but for some reason my other 3 cichlids just attacked it. So then I went back to the store to buy a couple more fish since now I only had 3 cichlids in my tank. I bought a pacu and another jack dempsey. In about 4 days, my pacu was attacked and had it's fins teared up and eventually died. My new jack dempsey is sitting at the conor of my tank and everytime it comes out from there, it is attacked by my other 3 cichlids. It looks like my jack dempsey is going to die soon because they keep attacking it and I don't see it eating any food because the other 3 cichlids seem to not let the jack dempsey have any. So basically my original 3 fish have been together for a couple months and it looks like their on a team or something to attack any new fish I add into my tank. What can I do about this? Thanks.