Hippocampus coronatus 


Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Syngnathiformes Syngnathidae

Scientific Name: Hippocampus coronatus
Species Authority: Temminck & Schlegel, 1850
Common Name(s):
English Crowned Seahorse
Taxonomic Notes: The name H. coronatus has often been applied to H. sindonis in the past. Morphometric (Lourie et al. 1999) and genetic (Mukai et al. 2000) research suggest that these two are not the same species. Mukai et al.’s (2000) data also suggest that H. coronatus is distinct from H. mohnikei.

Assessment Information [top]

Red List Category & Criteria: Data Deficient ver 3.1
Year Published: 2003
Date Assessed: 2003-04-30
Needs updating
Assessor(s): Project Seahorse
Reviewer(s): Marsden, A.D., Foster, S.J. & Vincent, A.C.J. (Syngnathid Red List Authority)
There are no published data about population trends or total numbers of mature animals for this species. There is very little available information about its extent of occurrence or its area of occupancy. There have been no quantitative analyses examining the probability of extinction of this species. As a result, the assessors have insufficient data to properly assess the species against any of the IUCN criteria.

Hippocampus coronatus previously was listed in 1996 as VU A2cd under old criteria. This assessment was based on suspected past declines in occupancy, occurrence and habitat, as well as on potential levels of exploitation. In reassessing the species under the new criteria and with greater taxonomic understanding we find that no appropriate data on biology and ecology, habitat, abundance or distribution are available for this species. Further research is needed. Assessed as Data Deficient under the new criteria.
Previously published Red List assessments:
1996 Vulnerable (VU)

Geographic Range [top]

Countries occurrence:
FAO Marine Fishing Areas:
Pacific – northwest
Range Map: Click here to open the map viewer and explore range.

Population [top]

Current Population Trend: Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology: Hippocampus coronatus are found among Sargassum, close to shore (Masuda et al. 1984). The breeding season of this species is June to July (Masuda et al. 1984).

This species may be particularly susceptible to decline. The limited information on habitat suggests they inhabit shallow sea-grass beds (Masuda et al. 1984) that are susceptible to human degradation, as well as making them susceptible to being caught as bycatch. All seahorse species have vital parental care, and many species studied to date have high site fidelity (Perante et al. 2002, Vincent et al. in review), highly structured social behaviour (Vincent and Sadler 1995), and relatively sparse distributions (Lourie et al. 1999). The importance of life history parameters in determining response to exploitation has been demonstrated for a number of species (Jennings et al. 1998).
Systems: Marine

Threats [top]

Major Threat(s): Project Seahorse trade surveys conducted between 2000–2001 indicated that the trade in H. coronatus appears to be quite small (B. Kwan, unpublished data). It is only found in Japan (from Hokkaido to Kyushu; Nakabo 2000), and while it is not targeted in any fishery, it may be caught incidentally in other fisheries (B. Kwan, unpublished data).

Conservation Actions [top]

Conservation Actions: The entire genus Hippocampus was listed in Appendix II of CITES in November 2002. Implementation of this listing will begin May 2004. Further research on this species biology, ecology, habitat, abundance, and distribution is needed.

Citation: Project Seahorse. 2003. Hippocampus coronatus. The IUCN Red List of Threatened Species 2003: e.T10065A3158858. . Downloaded on 30 May 2016.
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