Most Freshwater Leeches are Predators,but Some are Bloodsucking Ectoparasites (Micropredators)

Question

Most freshwater leeches are predators,but some are bloodsucking ectoparasites (micropredators).

Accepted Answer

Most freshwater leeches are predators of small invertebrates, but some species, such as the medicinal leech, are bloodsucking ectoparasites that feed on the blood of vertebrates.