Species · GBIF taxon 5201038
Thorny Seahorse
Hippocampus histrixAlso known as Spiny Seahorse, Thorny-Spined Seahorse
Thorny seahorses are easily recognized by the sharp, prominent spines covering their bodies and the long, slender snout they use to suck up tiny prey. These masters of camouflage cling to sea grasses, soft corals, and sponges using their prehensile tails, blending seamlessly into their reef habitats. Like other seahorses, males carry the developing eggs in a specialized brood pouch until they hatch as fully formed miniature seahorses.
MarineCamouflagedVulnerable
- diet
- Planktonic copepods, larval fish, and tiny crustaceans
- family
- Syngnathidae
- threats
- Bycatch in commercial fisheries, habitat destruction, and overharvesting for traditional medicine and the aquarium trade
- life Span
- 2 to 4 years
VU
Safe to observe at a normal distance.
Listed as Vulnerable due to heavy pressure from the traditional medicine trade, aquarium collection, and habitat degradation.
Observe quietly without touching or disturbing the surrounding coral and seagrass where they anchor.- Maintain distance: Avoid touching or crowding seahorses, as stress can weaken their immune systems.
- Avoid flash photography: Bright flashes can startle these sensitive fish and disrupt their natural behaviors.
- Watch the tail: Look for their prehensile tails anchored to soft corals or seagrasses to spot them.

