Common name: Polyclad Flatworms

Polycladida, commonly known as polyclad flatworms, are a diverse order of free-living flatworms found in marine environments. They are known for their intricate and often colorful patterns, which make them visually appealing in reef aquariums. Polyclads play a role in the natural balance of reef ecosystems, but they can become pests if their populations are not controlled. They are predators and scavengers, feeding on small invertebrates and detritus. Hobbyists should monitor their numbers, as some species may prey on sessile invertebrates such as corals and clams.

1. 
   Common name: Marine Blue Flatworm

   Scientific name: Cycloporus venetus
2. Common name: Flatworm

   Scientific name: Leptoplana tremellaris
3. 
   Common name: Orsak's Flatworm

   Scientific name: Maiazoon orsaki
4. Common name: Alcino's Flatworm

   Scientific name: Notoplana alcinoi
5. 
   Common name: Persian Carpet Flatworm

   Scientific name: Pseudobiceros bedfordi
6. Common name: Damawan Flatworm

   Scientific name: Pseudobiceros damawan
7. 
   Common name: Fuchsia flatworm

   Scientific name: Pseudobiceros ferrugineus
8. 
   Common name: Pseudoceros fulgor

   Scientific name: Pseudobiceros fulgor
9. 
   Common name: Glorious Flatworm

   Scientific name: Pseudobiceros gloriosus
10. 
    Common name: Camouflaged flatworm

    Scientific name: Pseudobiceros kryptos
11. Common name: Pseudoceros uniarborensis

    Scientific name: Pseudobiceros uniarborensis
12. Common name: White and orange edge flatworm

    Scientific name: Pseudoceros hancockanus
13. Common name: Pillar Tailed Flatworm

    Scientific name: Stylochus pilidium