Hello. I have some questions about Aristochromis Christyi. The first question is about mixing Lake Malawi, and Lake Tanganyika Cichlids. Can they mix with Frontosa Burundies? My other question is about tank size, from my understand the max size is from 25 to 30cm, and yet the minimum tank size suggested is 6 to 8 feet. If they could work in a 160cm long 55 cm wide 60cm high, 140g and would be able to mix Frontosas, how big prey would they be able to take, they would have to coexist with 15cm fish, but i doubt that would be an issue.