Malacoctenus zonogaster, the Belted blenny, is a species of labrisomid blenny mainly native to the Galápagos Islands (also scantly present along the Pacific coast from Baja California to Peru). It is an inhabitant of tide pools and rocky shores, being found from near the surface to 5m (16feet). The species can reach a length of 8.5cm (03.3inches) total length.