Shorefishes of the Greater Caribbean online information system

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Species: Acentronura dendritica, Seahorse pipefish, the Pipehorse

All Families:   All Genera:   All Species:

head angled down
snout short
tail curled, with C
A 2
brood pouch under tail

Acentronura dendritica (Barbour, 1905)

Seahorse pipefish, Pipehorse

Head angled down; snout short, with a central ridge originating near its middle; rear 1/3 of tail curled under body, with tail fin; base of dorsal fin elevated, fin 15-18 rays; anal fin 2; no pelvic fins; lower trunk ridge ends near anus, upper trunk and tail ridges interrupted near rear of dorsal fin; lateral trunk ridge ends under dorsal fin; trunk 13-15 rings; head and body with branched skin flaps; brood pouch under tail rings 10-11, pouch plates not enlarged, pouch unsealed.

Color variable; dark blotches on a light background to uniform dark grey-brown.

Reaches 8.1 cm.

Pelagic in floating Sargassum; occasionally in benthic algae and on reefs.

Depth range: 1-15 m.

New Brunswick to NE Brazil.

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  • Marine
  • Marine Only
  • Inshore Only
  • Inshore
Water Column Position
  • Bottom
  • Reef (rock/coral/oyster)
  • Flotsam
  • Soft bottom (mud/sand/gravel/beach/estuary/mangrove/seagrass)
  • Water column
  • Submerged vegetation
  • Reef associated (reef + edges-water column & soft bottom)
FishBase Habitat
  • Demersal
Feeding Group
  • Carnivore
  • No Data
  • Mobile benthic crustacea (shrimps/crabs)
Egg Type
  • No data
  • Live birth
  • Pelagic larva
Global Endemism
  • West Atlantic Endemic
  • Greater Caribbean non-endemic
Regional Endemism
  • Also in Brazil
  • Continent + Island (s)
  • Extends North of GC
  • Island (s)
  • Extends South of GC
  • Continent
  • GC non-endemic
  • Extends N + S of GC
  • Resident
Climate Zone
  • Equatorial (0-10N, Costa Rica / Venezuela)
  • Tropical (10-23N, Nicaragua / Cuba)
  • Subtropical (23-35N, Florida / Carolinas / Bermuda)
  • Temperate (>35N)
IUCN Red List
  • Not evaluated / Listed
  • Not listed
Length Max
  • 8.1
Depth Range Min
  • 1
Depth Range Max
  • 15