• Cellular forms
• Domain: Eukaryota
• Kingdom: Animalia
• Subkingdom: Monocytozoa or Protozoa
• Phyllum: Ciliophora
• Class: Oligohymenophorea
• Order: Hymenostomatida

• Family: Ichthyophthiriidae
• Family: Turaniellidae
• Family: Spirozonidae
• Family: Glaucomidae