The Geophagus tapajos is a South American cichlid known for its vibrant red and blue fins and bright red-orange head, and it is a peaceful and relatively small species, reaching 5-6 inches. It gets its name from its habit of sifting through sand in search of food, a behavior that requires a soft, sandy substrate in its aquarium. They are social fish that should be kept in groups of 5-8 to establish a healthy hierarchy.