Hippocampus reidi 

Scope: Global
Language: English

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Taxonomy [top]

Kingdom Phylum Class Order Family
Animalia Chordata Actinopterygii Syngnathiformes Syngnathidae

Scientific Name: Hippocampus reidi Ginsburg, 1933
Regional Assessments:
Common Name(s):
English Long-snout Seahorse, Slender seahorse, Slender Seahorse
Spanish Cabailito, Caballito de mar, Caballito hocico largo, Caballito Narizón
Hippocampus obtusus Ginsburg, 1933
Hippocampus poeyi Howell and Riviero, 1934
Taxonomic Source(s): Wang, X., Zhang, Y., Zhang, H., Meng, T., and Lin, Q. 2016. Complete mitochondrial genome sequence of the longsnout seahorse Hippocampus reidi (Ginsburg, 1933; Gasterosteiformes: Syngnathidae). Mitochondrial DNA Part A: DNA Mapping, Sequencing, and Analysis 27(2): 1401-1402.

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 reidi previously was listed in 1996 as VU A2cd under the 1994 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:

Geographic Range [top]

Countries occurrence:
Bahamas; Barbados; Belize; Bermuda; Brazil; Colombia; Cuba; Grenada; Haiti; Jamaica; Panama; United States (Florida, North Carolina); Venezuela, Bolivarian Republic of
FAO Marine Fishing Areas:
Atlantic – western central; Atlantic – southwest
Additional data:
Range Map:Click here to open the map viewer and explore range.

Population [top]

Population:During Project Seahorse trade surveys conducted between 2000–2001, fishers in Brazil, Guatemala, Honduras, Mexico, Nicaragua and Panama reported decreases in the catch of seahorses both in trawls (as bycatch) and by divers (J. Baum and I. Rosa, unpublished data), but the portion of these declines attributable to H. reidi is unknown.
Current Population Trend:Unknown
Additional data:

Habitat and Ecology [top]

Habitat and Ecology:Vari (1982) reports H. reidi at depths as great as 55 m. Small individuals tend to be found in shallower water than large animals (Dauwe 1993). It has been found on gorgonian corals, seagrass, mangroves and Sargassum (Lieske and Myers 1994). Hippocampus reidi are pair-bonded in the wild (B. Dauwe and M. Nijhoff in litt. to Lourie et al. 1999).

This species may be particularly susceptible to decline. 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).

Threats [top]

Major Threat(s): Hippocampus reidi are collected and traded in the Americas as aquarium fishes, folk medicine, curiosities and for religious purposes (Rosa et al. 2002). The volume of this trade is unknown, as there is confusion between this species and a similar one, H. erectus. Without appropriate management this trade might represent a threat to the species. H. reidi are also taken as bycatch in shrimp trawl fisheries in the U.S., Mexico and Central America (Rosa et al. 2002). A study of bycatch in Florida found that most seahorses in bycatch were H. erectus; this suggests that H. reidi may not be as susceptible to trawling as H. erectus, possibly because of habitat differences.

Hippocampus reidi is considered threatened in the United States by the American Fisheries Society (AFS) (Musick et al. 2000). They cite the species' rarity and degradation of its seagrass habitats in South Florida as reasons for this listing. While this status may apply on a national level, we did not find information that would justify such a listing for the species as a whole.

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. The export of syngnathids from Mexico is effectively banned. Permits or licenses are required to export dried syngnathids from Honduras and Nicaragua, and to export live syngnathids from Panama, Brazil, Costa Rica, Guatemala and Nicaragua. Further research on this species biology, ecology, habitat, abundance and distribution is needed.

Classifications [top]

9. Marine Neritic -> 9.1. Marine Neritic - Pelagic
1. Land/water protection -> 1.1. Site/area protection
1. Land/water protection -> 1.2. Resource & habitat protection
2. Land/water management -> 2.1. Site/area management
3. Species management -> 3.1. Species management -> 3.1.1. Harvest management
3. Species management -> 3.1. Species management -> 3.1.2. Trade management
4. Education & awareness -> 4.2. Training
4. Education & awareness -> 4.3. Awareness & communications
6. Livelihood, economic & other incentives -> 6.1. Linked enterprises & livelihood alternatives

In-Place Research, Monitoring and Planning
In-Place Land/Water Protection and Management
In-Place Species Management
In-Place Education
  Included in international legislation:Yes
  Subject to any international management/trade controls:Yes
5. Biological resource use -> 5.4. Fishing & harvesting aquatic resources -> 5.4.6. Motivation Unknown/Unrecorded
♦ timing:Ongoing    
→ Stresses
  • 2. Species Stresses -> 2.1. Species mortality

0. Root -> 100.1. OLD 1.1.1-Policy-base actions->Management plans->Development
1. Research -> 1.2. Population size, distribution & trends
1. Research -> 1.3. Life history & ecology
1. Research -> 1.5. Threats
1. Research -> 1.6. Actions
3. Monitoring -> 3.1. Population trends

Bibliography [top]

Baillie, J. and Groombridge, B. (eds). 1996. 1996 IUCN Red List of Threatened Animals. pp. 378. International Union for Conservation of Nature, Gland, Switzerland and Cambridge, UK.

Dauwe, B. 1993. Ecologie van het zeepaardje Hippocampus reidi (Syngnathidae) op het koraalrif van Bonaire (N.A.): Habitatgebruik, reproductie en interspecifieke interacties. Rijksuniversiteit Groningen, Netherlands.

IUCN. 2003. 2003 IUCN Red List of Threatened Species. www.iucnredlist.org. Downloaded on 18 November 2003.

Jennings, S., Reynolds, J.D. and Mills, S.C. 1998. Life history correlates of responses to fisheries exploitation. Proceedings of the Royal Society of London Series B 265:333-339.

Lieske, E. and Myers, R. 1994. Collins Pocket Guide. Coral reef fishes. Indo-Pacific and Caribbean including the Red Sea. Harper Collins Publishers.

Lourie, S.A., Vincent, A.C.J. and Hall, H.J. 1999. Seahorses: an identification guide to the world's species and their conservation. Project Seahorse, London.

Musick, J.A., Harbin, M.M., Berkeley, S.A., Burgess, G.H., Eklund, A.M., Findley, L., Gilmore, R.G., Golden, J.T., Ha, D.S., Huntsman, G.R., McGovern, J.C., Parker, S.J., Poss, S.G., Sala, E., Schmidt T.W., Sedberry, G.R., Weeks, H. and Wright, S.G. 2000. Marine, estuarine, and diadromous fish stocks at risk of extinction in North America (Exclusive of Pacific Salmonids). Fisheries 25(11): 6-30.

Perante, N.C., Pajaro, M.G., Meeuwig, J.J. and Vincent, A.C.J. 2002. Biology of a seahorse species Hippocampus comes in the central Philippines. Journal of Fish Biology 60: 821-837.

Rosa, I.L., Dias, T.L., and Baum, J.K. 2002. Threatened fishes of the world: Hippocampus reidi Ginsburg, 1933 (Syngnathidae). Environmental Biology of Fishes 64: 378.

Vari, R. 1982. Fishes of the western North Atlantic, subfamily Hippocampinae. The seahorses. Sears Foundation for Marine Research Memoir, Yale University, USA. 1(8): 173-189.

Vincent, A.C.J. 1990. Reproductive ecology of seahorses. PhD thesis. University of Cambridge. Cambridge, UK

Vincent, A.C.J. and Sadler, L.M. 1995. Faithful pair bonds in wild seahorses, Hippocampus whitei.. Animal Behaviour 50: 1557-1569.

Vincent, A.C.J., Evans, K.L. and Marsden, A.D. 2005. Home ranges of the monogamous Australian seahorse, Hippocampus whitei. Environmental Biology of Fishes 72: 1-12.

Citation: Project Seahorse. 2003. Hippocampus reidi. In: The IUCN Red List of Threatened Species 2003: e.T10082A3160775. . Downloaded on 18 November 2017.
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