Why are my gourami fish fighting? What should I do for them to stop?

I have a 80g fish tank, with 17 tetra cardinals, 2 gold gouramis, 2 tri colored sharks, 4 Powder blue dwarf gouramis,2 neon dwarf gouramis, 4 ruby sharks, 2 flame gouramis, and 4 chinese algae eaters. I had all these fish for about a week except the Powder blue dwarfs and the neon dwarf gouramis. As soon as I bought the new fish and put them in, the gold gouramis are starting to chase eachother aggresively and are biting the new fish. Through the day the chasing has slowed down, but it is so bad I am scared for the new fishes lives. All the other fish are doing there own thing which is a good thing. What should I do for the gouramis to stop fighting?