<unk>  is a genus of parasitic diplomonads. It is related to Giardia. H. columbae and H. meleagridis live in the intestines of birds. H. muris and H. pitheci live in the intestines of mammals. H. salmonis and H. truttae live in the intestines of fish. The genus also includes the species<unk>  inflata. It is believed that<unk>  parasites are one possible cause for head and lateral line erosion ("hole-in-the-head disease") in aquarium fishes.
Hexamita
Gonyaulax
Cerbera odollam
Rhinophyma
Boswellia
Philotimus
Piedraia hortae
Cynanchum viminale