Nosferatu molango (previously placed in the genus Herichthys), also known as Aztec Cichlid, is a species of cichlid endemic to the "Laguna Azteca", in the headwaters of the Rio Moctezuma (Rio Panuco Basin), in the municipality of Molango, state of Hidalgo, Mexico at 1,270 meters above sea level. It is distinguished from other species of the genus in "having a slender (slightly broader than long), well-spaced, unicuspid and conical, posterior slightly flattened, indented lower pharyngeal plate (instead of having large molars), with 2 rows of 8–9 medium-sized, lightly pigmented molars that flank the midline; 11–13 nonenlarged conic teeth along the posterior margin. Distinguished from all other species in the genus by a combination of the following characters: predorsal contour deep and nonac