Collar Seahorse, Hippocampus jugumus Kuiter 2001

Holotype of the Collar Seahorse, Hippocampus jugumus, collected in 1925 at Lord Howe Island, New South Wales (AMS IA.2424). Source: Mark Allen / Australian Museum. License: CC BY Attribution-Noncommercial

A small reddish seahorse with two more trunk rings than most other seahorse species, and almost V-shaped double spines on the head.

Cite this page as:
Dianne J. Bray, Hippocampus jugumus in Fishes of Australia, accessed 23 Jul 2024,

Collar Seahorse, Hippocampus jugumus Kuiter 2001

More Info


Known only from off Lord Howe Island in the Tasman Sea, and the Poor Knights Islands, northern New Zealand.


Dorsal fin 20; Trunk rings 12; Tail rings 37; Subdorsal spines 4/0,1,1,1,1.
Nose spine moderately large, height about equal to pupil diameter; double spine above eyes moderately long, slightly longer than pupil diameter; lateral head spine double and large; coronet slightly raised; gill openings extending upwards, almost joined at neck ridge; shoulder rings confluent over neck-ridge forming continuous collar.


The specific name jugumus is from the Latin jugum meaning 'yoke', in reference to the yoke-like ridge that is formed by the shoulder rings joined over the nape.


Dianne J. Bray

Collar Seahorse, Hippocampus jugumus Kuiter 2001


Allen, G.R., D.F. Hoese, J.R. Paxton, J.E. Randall, B.C. Russell, W.A. Stark II, F.H. Talbot & G.P. Whitley. 1976. Annotated checklist of the fishes of Lord Howe Island. Records of the Australian Museum 30(15):365-454. (as Hippocampus sp. B)

Edney, G., White, P. & Kuiter, R. 2006. The Northern Advocate, 18 February (New Zealand).

Kuiter, R.H. 2001. Revision of the Australian seahorses of the genus Hippocampus (Syngnathiformes: Syngnathidae) with descriptions of nine new species. Records of the Australian Museum 53(3): 293–340. PDF

Quick Facts

CAAB Code:37282112

Biology:Males brood the eggs

Conservation:IUCN Data Deficient; CITES Listed

Depth:20+ m

Habitat:Reef associated

Max Size:6 cm

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