Nosferatu pratinus (previously placed in the genus Herichthys), also known as green labridens or mojarra caracolera verde in Spanish, is a species of cichlid "endemic to the Rio el Salto,in the Rio Pánuco Basin in Mexico. The river runs through the Sierra La Colmena, where a series of pools and cascades called “Micos” occur. The area includes seven cascades with heights of five meters or more. Up the river is a town called El Naranjo, which is 102 km north from Ciudad Valles at the border between the States of Tamaulipas and San Luis Potosí. Two kilometers upstream from El Naranjo exists a series of pools and cascades, such as El Salto and El Meco, which are 70-m and 35-m high, respectively; both sites are inhabited by H. pratinus."