What the feeding mechanism of lampreys?

Lampreys are jawless fish that use a unique feeding mechanism characterized by their suction feeding. They have a round, sucker-like mouth equipped with rows of sharp, keratinized teeth, allowing them to latch onto their prey, which is often a fish. Once attached, they use their tongue to scrape away the flesh and feed on the host's blood and bodily fluids. This parasitic feeding strategy can cause significant harm to their hosts.