Florent's Guide To The Hawaiian, South Pacific and

Indo-Pacific Reefs

Mimic Flatworm
Pseudoceros imitatus
Mimic Flatworm
Category: Polyclad Flatworms
Scientific Name: Pseudoceros imitatus
Size: Up to 1.25 in. (3 cm)  
Distribution: Indo-West Pacific
This flatworm mimics the toxic nudibranch Phyllidiella pustulosa
Platyhelminthes (Phylum)
└Polycladida (Order)
 └Pseudocerotidae (Family)
  └Pseudoceros (Genus)
   └P. imitatus (Species)
WoRMS ID: 878921🔗
iNaturalist ID: 346872🔗

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© 2026 Florent Charpin