Fauna
Fish

Longsnout Seahorse

Hippocampus reidi

Also known as Slender Seahorse

Longsnout seahorses drift gracefully through coastal shallows, anchoring their prehensile tails around seagrass blades, gorgonians, and mangrove prop roots. Masters of camouflage, individuals shift coloration between bright yellow, orange, and mottled brown to match their immediate surroundings. Males carry fertilized eggs in a specialized brood pouch, enduring a multi-week pregnancy before giving birth to hundreds of fully formed, free-swimming young.

MarineCamouflageCoral Reef
Longsnout Seahorse reference
(c) Andreas März, some rights reserved (CC BY) · cc-by
—observations
—countries
—peak records
Near ThreatenedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNear ThreatenedRed List categories, explained →
Key facts
Diet & preyMysid shrimp, Copepods, Amphipods
Predators
  • Crabs
  • Rays
  • Large predatory reef fish
ThreatsHabitat degradation, bycatch in shrimp trawls, and overexploitation for the aquarium trade
HabitatsSeagrass beds, coral reefs, mangrove roots, and coastal lagoons
Life span1–4 years
Classification
  1. OrderSyngnathiformes
  2. FamilySyngnathidae
  3. GenusHippocampus
  4. SpeciesHippocampus reidi
Range & activity
Range data is not available yet.
Safe observation
Interaction riskLow
  1. Low
  2. Moderate
  3. High
  4. Very high
Why interaction risk is low
Safe to observe at a normal distance.
What to notice
Look for an elongated snout and slender, coronet-topped head camouflaged among sea fans or seagrass stems.
Support conservation
Observe quietly from at least one meter away without touching or disturbing surrounding vegetation.
Responsible observation
  • Diving Etiquette: Maintain neutral buoyancy and never touch or grab their delicate prehensile tails.
  • Lighting Care: Avoid sustained bright underwater lights or repetitive strobes, which cause disorientation.
Related species
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