Florent's Guide To The

South Florida Reefs

Lined Flatworm
Prostheceraeus crozieri
Lined Flatworm
Also known as: Crozier's Flatworm, Tiger Flatworm
Category: Flatworms
Scientific Name: Prostheceraeus crozieri
Synonyms: Pseudoceros crozieri, Cryptoceros crozeri, Maritigrella crozierae
Size: 1 to 2 in. (2.5 to 5 cm)  
Depth: 1-35 ft. (0-12 m)
Distribution: Caribbean, Bahamas, Florida
Note: The juvenile lined flatworm has an orange fringe, which it will lose as an adult
Platyhelminthes (Phylum)
└Polycladida (Order)
 └Euryleptidae (Family)
  └Prostheceraeus (Genus)

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© 2025 Florent Charpin