Yes, the African cichlids should not be feed on animal products such as bloodworm. The reason why you should limit the bloodworm and other animal products that you give to cichlids is this: because African cichlids have been feeding mainly on seafood and algae over millions of years, they have undergone evolution by developing a longer intestine than usual. Therefore, the gut is unable to digest some terrestrial animal fats. This leads to blockage. Eventually the fish is unable to excrete waste, and finally, it dies. That is why animal products should not be part of the African cichlid food.\r