A lamprey (sometimes also called lamprey eel) is a parasitic marine animal with a toothed, funnel-like sucking mouth. Translated directly, their name means stone lickers (lambere = to lick, and petra = stone). While lampreys are well known for those species which bore into the flesh of other fish to suck their blood, these species make up the minority. In zoology, lampreys are often not considered to be true fish because of their vastly different morphology