You're right, I couldn't even find pictures of it, just drawings. I have a feeling you're not going to find much.
Ok, did find something in Konings 'Natural Habitat'. He titled the section "The rarest Tanganyikan cichlid". He says it's only been collected from two locations, Hore Bay and Sumbu Bay, and at great depths of 40 and 100 meters, 'so no information on its ecology is available'.
Why, do you have some available to you? If so, I'd snag them regardless and be the first to learn.