Geophagus sp. Tapajos “Red head” The Tapajos 'Red head', is a beautiful and relatively peaceful species that is considered a rare "gem" in the hobby; they will add intense, red coloration and touch of class to any aquarium. Tapajos can only be found in the Rio Tapajos within the Amazon River basin of South America. Like other Geophagus species, the Tapajos will continuously sift through sand in search of food. In addition to their bright, orange-red heads, they have a base color of tan to gray, with slight, vertical banding (8-10 bars) and gold to green, iridescent scales on their flanks. Tapajos have iridescent gold to green patterns on their operculum as well as a variety of gold-green to orange-red markings on their translucent fins. They also have a black ocellus spot on and below their upper lateral line.