Iodotropheus stuartgranti is a species of cichlid endemic to Lake Malawi. It can also be found in the aquarium trade. This species can reach a length of TL. The specific name honours Stuart M. Grant (1937-2007), an exporter of cichlids from lake Malawi for the aquarium trade. This species feeds mainly on aufwuchs. The males are territorial and the female will lay anywhere within a male's territory.