There is a great article by Dr. Melanie Stiassny on this species in Cichlids Yearbook Vol. 6, pages 53 to 57. I would recommend you purchase a copy of this fine book and check out this article. It will surely give you more information on its systematics, husbandry, and spawning that you could ever imagine.
Probably...I know that I have several of Koinings's books...and Lamboj's on West Africans...I don't currently have access to a lot of my books (moved earlier this year)...so can't give you a complete list.
The fish in question (Sarotherodon caudomarginatus) was the fish on the home page of CRC when I logged in one day in April...and I had a passing interest whether anyone was keeping them.