Most, if not all, Africans are listed as Aggressive because they are aggressive compared to other fish. When stocking African tanks you have to look at how aggressive of an African it is towards other Africans. Kenyi juvi's are pretty calm. They start to show their aggression during breeding. They can become very territorial. But as long as you provide plenty of hiding spots and caves, it will be fine. When adding larger fish, start with the most docile and work your way up. But when adding small juvi's, it's not that big of a deal.