Do lamprey eels and hagfish feed on other fish?

Lamprey eels are parasitic and feed on the blood and tissues of other fish by attaching to them with their suction-cup mouths. In contrast, hagfish are scavengers that primarily feed on dead or dying fish, as they lack jaws and instead use their slime-producing capabilities to access the insides of carcasses. While both have unique feeding strategies, neither actively hunts healthy fish like many other predators do.