Shorefishes of the Greater Caribbean online information system

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Species: Hippocampus reidi, Longsnout Seahorse, Slender Seahorse

All Families:   All Genera:   All Species:

body not deep
snout long
D 16-19, outer dark stripe
dense dark dots
pectoral 14-17

Hippocampus reidi Ginsburg, 1933

Longsnout Seahorse, Slender Seahorse

Neck curved, with head at about right angle to body; coronet variable, low and rounded or large and convoluted; body not deep; snout long (41-49% of head length, longer than part of head behind eye) and slender; cheek spines and eye spines broad, almost double; dorsal fin large, its base elevated, 17 (16-19) rays; pectorals 16 (15-17) rays and anal small; no pelvic fins; tail prehensile, curlable, without a tail fin; body spines low, rounded; 11 body rings, 35 (31-39) trunk rings; usually no skin appendages; brood pouch on trunk, but extends along 5-7 tail rings.

Head and body with densely scattered dark round spots of differing sizes on a light background; or white dots on a dark background; body often with dark crossbars; dorsal fin clear, with a dark stripe in from outer edge.

Reaches 17.5 cm.

Reefs, seagrass and macroalgal beds.

Depth range: 1-65 m.

Bermuda to Brazil.

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  • Marine
  • Brackish
  • Inshore
  • Inshore Only
Water Column Position
  • Bottom
  • Sand & gravel
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Submerged vegetation
  • Estuary
  • Reef (rock/coral/oyster)
  • Reef and soft bottom
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
  • Reef Associated
Feeding Group
  • Carnivore
  • Data
  • Planktivore
  • Data
  • Zooplankton
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • Data
  • Live birth
  • Pelagic larva
Global Endemism
  • All species
  • Greater Caribbean non-endemic
  • West Atlantic Endemic
Regional Endemism
  • Also in Brazil
  • Extends South of GC
  • Continent
  • Continent + Island (s)
  • GC non-endemic
  • Island (s)
  • All species
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Tropical (10-23N, Nicaragua / Cuba)
IUCN Red List
  • Listed
  • Near threatened
  • Appendix II
  • Listed
Length Max
  • 17.5
Depth Range Min
  • 1
Depth Range Max
  • 65