Hag

the name of certain fishes of worm-like form and without eyes or seales. The mouth is formed for suction, is without lips, and furnished ~ with fleshy filaments or barbels. There is a single median fang on the palate by means of which the hag makes its way into the interior of other fishes, such as the cod, ling, or haddock, where it lives parasitically. An American species is not uncommon in rivers of New York and New England.