Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Syngnathiformes Syngnathidae

Scientific Name: Hippocampus severnsi
Species Authority: Lourie & Kuiter, 2008
Taxonomic Notes:

Hippocampus severnsi is named in honour of Mike Severns who, with Hence Pontoh, collected the first specimens (Lourie and Kuiter 2008).

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2010
Date Assessed: 2009-12-15
Assessor(s): Sorensen, M.
Reviewer(s): Kleiber, D. & Lourie, S.

H. severnsi is a recently discovered species of pygmy seahorse. Because Lourie and Kuiter (2008) is the first documented record of this species, there is not enough available information to evaluate it under any of the IUCN criteria.

Geographic Range [top]

Range Description:

H. severnsi is known from Indonesia (Bunaken, Wakatobi, Raja Ampat Islands, Kawe Island), Japan (Ryukyu Islands), Papua New Guinea (Milne Bay, Madang), Solomon Islands (Mborokua) and Fiji (Lourie and Kuiter 2008) and Australia (Cairns) (see the species image and description on the Australian Museum web site).

Countries occurrence:
Australia; Fiji; Indonesia; Japan; Papua New Guinea; Solomon Islands
FAO Marine Fishing Areas:
Pacific – northwest; Pacific – western central
Lower depth limit (metres): 20
Upper depth limit (metres): 8
Range Map: Click here to open the map viewer and explore range.

Population [top]

Population: Unknown.
Current Population Trend: Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:

H. severnsi is found between depths of 8–20 m and is apparently more active in the morning and late afternoon when it is not in direct sunlight. In Indonesia, it has been found with Catenicella sp. a yellow bryozoan species, as well as different kinds of hydrozoans including  Lytocarpus phoenicea, Antennellopsis integerrima and Halicordyle disticha. It has been seen swimming over a fungiid coral and is recorded from fissures on current-swept walls where it will tend to occur on the side of the fissure that faces away from the current, but in all cases where there is some upward current (Lourie and Kuiter 2008). In Papua New Guinea it has been observed on a gorgonian coral of the genus Muricella at 12 m depth (Lourie and Kuiter 2008).
Extremely small size, height 13 mm, standard length 15 mm (Lourie and Kuiter 2008).

Systems: Marine

Threats [top]

Major Threat(s): None known.

Conservation Actions [top]

Conservation Actions: None known. It is listed on CITES Appendix II.

Citation: Sorensen, M. 2010. Hippocampus severnsi. The IUCN Red List of Threatened Species 2010: e.T172283A6864117. . Downloaded on 09 October 2015.
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