Mordacia lapicida

Mordacia lapicida, also known as the Chilean lamprey, is a species of southern topeyed lamprey endemic to southern Chile, where it can be found in riverine and marine habitats. This species is anadromous. This parasitic lamprey can reach a length of 54 cm SL. Ammocoetes and adults of this species are found in rivers, and occur in fine sand along river banks. The life cycle of a Mordacia lapicida is divided into three life stages: freshwater rearing, an ocean parasite and an adult spawning stage. Once in the adult stage, individuals migrate into marine waters where they attack and attach themselves to marine fishes.