Florent's Guide To The

French Polynesian Reefs

Thorny seahorse
Hippocampus histrix
Thorny seahorse
Also known as: Spiny Seahorse
Category: Seahorses
Scientific Name: Hippocampus histrix
Size: Up to 6 in. (15 cm)  
Depth: 30-80 ft. (10-25 m)
Distribution: Indo-West Pacific, French Polynesia
Chordata (Phylum) Chordates
└Vertebrata (Subphylum) Vertebrates
 └Osteichthyes (Parvphylum) Bony Fishes
  └Actinopterygii (Gigaclass) Ray-Finned Fish
   └Teleostei (Class) Teleosts
    └Syngnathiformes (Order)
     └Syngnathidae (Family) Seahorses and Pipefishes
      └Syngnathinae (Subfamily)
       └Hippocampus (Genus) Seahorses
        └H. histrix (Species)
WoRMS ID: 212239🔗
iNaturalist ID: 102823🔗

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© 2026 Florent Charpin