Hello. I just added an angel to my tank today. I already had 2 and have had them for several months with no problems at all. I added the new one today and immediately one of my original fish attacked it. I chased it away and they were fine for a few minutes. The fish is also agressive towards the second of the original fish which strikes me as odd. The second of the two shows no aggression whatsoever to the new guy. In fact it seems like he's sticking up for him a bit. But as soon as he turns his back, the first one goes after the new guy. The first two are of the same size, and the new one is considerably bigger. Any help on what I can do? Will they get used to each other or will I have to seperate? Please help soon!