Australia country information

Common names: West Australian seahorse
Occurrence: endemic
Salinity: marine
Abundance: | Ref:
Importance: | Ref:
Aquaculture: | Ref:
Regulations: protected | Ref:
Uses: no uses
Comments: Type locality of Hippocampus subelongatus and Hippocampus elongatus, Fremantle, Western Australia (Ref. 75154). Known from Freemantle, Perth, Swan River, Houtman Abrolhos Islands. Moved under the Australian Wildlife Protection Act in 1998; numbers have declined substantially in 1998 in the Swan River near Perth purportedly due to overcollecting for aquaria (Ref. 30915). Also Ref. 51523, 115213.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/as.html
National Fisheries Authority: http://www.csiro.au/
Occurrences: Occurrences Point map
Main Ref: Hoese, D.F., D.J. Bray, J.R. Paxton and G.R. Allen, 2006
National Database:

Common names from other countries

Tiger snout seahorse, Lääneaustraalia merihobuke, ... more

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Syngnathiformes (Pipefishes and seahorses) > Syngnathidae (Pipefishes and seahorses) > Syngnathinae
Etymology: Hippocampus: Greek, ippos = horse + Greek,kampe = curvature (Ref. 45335).
More on author: Castelnau.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; brackish; demersal; non-migratory; depth range 0 - 25 m (Ref. 30915). Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Indian Ocean: southwest Australia.

Length at first maturity / Size / Weight / Age

Maturity: L_m 13.0 range ? - ? cm
Max length : 20.0 cm OT male/unsexed; (Ref. 30915)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 16-20.

Found on edge of rocky areas, muddy bottom and areas of high sediment load; jetty piles and moorings; often associated with sponges or sea squirts or attached to man-made objects; moves to deeper waters in winter. Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205). This species manifested evidence of genetically monogamous character in seahorses (Ref. 59213). Site fidelity is observed during breeding season (Ref. 59213). Length type refers to height (= TL - head length) (Ref. 30915). Minimum depth reported taken from Ref. 128812.

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Gestation period 2-3 weeks, depending on water temperature. This species manifested evidence of genetically monogamous character in seahorses (Ref. 59213). Monogamous mating is observed as both obligate and genetic (Ref. 52884). Site fidelity is observed during breeding season (Ref. 59213). Male carries the eggs in a brood pouch (Ref. 205).

Main reference Upload your references | References | Coordinator | Collaborators

Lourie, S.A., R.A. Pollom and S.J. Foster, 2016. A global revision of the seahorses Hippocampus Rafinesque 1810 (Actinopterygii: Syngnathiformes): taxonomy and biogeography with recommendations for further research. Zootaxa 4146(1):1-66. (Ref. 115213)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 25 August 2016

CITES (Ref. 128078)

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FishSource |

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Estimates based on models

Preferred temperature (Ref. 115969): 18 - 23.7, mean 18.7 (based on 107 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00447 (0.00177 - 0.01127), b=3.00 (2.78 - 3.22), in cm Total Length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.5 se; based on size and trophs of closest relatives

Resilience (Ref. 120179): Medium, minimum population doubling time 1.4 - 4.4 years (Fec = 200-700).

Fishing Vulnerability (Ref. 59153): Low vulnerability (10 of 100).

Hippocampus subelongatus Castelnau, 1873