The majority are metriaclima msobo and a number of metriaclima sp. zebra 'Chilumba' (Luwino Reef).
Very unconventionally, there are also a trio of pseudotropheus demasoni's (1m/2f) that have been co-existing fairly well in this tank for the last three years ( they are exhiles from my 75gal demasoni colony tank; their time in this tank was supposed to be a temporary thing).