I have this Tropheops red top Chilumba. Everything was fine until yesterday. It all began after my katale's bred. He started to chase the biggest female non stop until today. She is very weak and much fin damage. But he seems to concentrate on her and not on the other two females. I had to put the male into another tank. Anyone have any suggestions on how to solve this? I want to eventually put him back in the main tank (maybe more rocks?) I have a 75gallon with 23 mbuna total. The new 16 fish I added has only been in the tank for 5 days. Thank you for your help.