Mastacembelus moorii is a species of fish in the family Mastacembelidae. It is endemic to Lake Tanganyika where it is a secretive species hiding among rocks or in the sediment in the littoral zone. It grows to a total length of 44cm (17inches). The specific name honours the leader of an expedition to Lake Tanganyika, the biologist John Edmund Sharrock Moore (1870-1947).[1]