Yup..they are from Lake Tanganyika.
Beautiful fish there Aqualung!! Your Red Rainbows are gorgeous and I especially love the last pic in Post # 3 Nice catch on the pic!!
My setups are 2 75 gallon and 2 90 gallon ,all with Tropheus colonies.. The 90s are filtered by and FX5 the other has a Eheim 2260.. The 75s have double canisters, all have hydro sponges also