Blue Rams Fighting

Today i purchased two new german blue rams. They are are still very young, only about an inch long, mouth to end of tail fin. I added them to my community tank which currently houses two older adult german blue rams. The other occupants are a mixture of neons, glolites, corys, and danios. The problem is since i added the young ones, the two older ones are now doing there little fighing dance and one is chasing the other all over the tank. After about an hour, one of the younger rams is now following the more aggressive of the older rams, as if they are father and son. Even the younger one is chasing around the other adult ram and other young ram. I also recently raised my water temperature from 76 -78 to 80 - 82. Why would the sudden additon of two new baby rams cause the two older ones to start being aggresive towards each other? Is this normal? Appreciate any help.

I have a standard 55 Gallon tank. I might try some restructuring today after work. Both of the young ones have pink stomaches. I think its still to early to tell though about the pair. All the rams in the store have pink stomaches, at least 30 of them. They seem more settled this morning.

Well they have the pink stomachs, but what shade of pink i guess i can't really compare. Young male rams don't have any pink near there stomach?

Here is a couple pictures of my two new blue rams. You can definately see the pink stomach, even though the pics are blurry.