Just today I bought 2 purple fire fish. I put them in with 2 clown fish and 2 green chromis I have had for about 8 months. The LFS said I could add the fire fish to my tank without a problem. I have a 24 gallon tank. The clowns, especially the female are attacking and nipping at the fire fish to the point that they have to hide in the rock. Will the clown fish calm down and except the firefish or did I make a huge expensive mistake?? Help please..