I just got a pair of black marble angels, I all ready had 6 sliver angels in my tank. Now after adding these two new angels they have started to attack my older angels which are small in size. What should i do? please help.
There isn't alot you can do, other than move the new fish into another tank or add a divider. They might calm down some after the pecking order is established, they might not, sorry, that's all I have for you. I've had the same issue with my angels in the past, and it didn't end until I separated them.