I might also add that very few (close to nil) people on the various forums I frequent (myself included) have had diet-related disease issues with african mbuna, despite the rumor to the contrary. I feed all my cichlids 45% protein pellets, and they all (mbuna included) get live guppies and ghost shrimp on a somewhat regular basis. I've read plenty of accounts in which other keepers feed their mbuna similar diets, such as bloodworms and the like. I can count the number of times I've read "HELP! MY MBUNA HAS BLOAT!" over the past 2 years of my fish-forum going on one hand, with 2-3 fingers removed.
I invite the all-knowing all-mighty KUTTY over to El Paso where he can examine my mbuna and tell me they are all unhealthy disease-ridden quagmires (which they are not).
KUTTY I know it may be pretty tough for you to accept this, but you don't know everything, especially in regards to this topic. And don't distort my argument regarding pH, please. I made an inquiry with the use of a statement on a thread, and I let the ichthyologists take it from there.
The only african cichlid species that require a monitored diet, to my knowledge and experience, are Tanganyikan Tropheus species.