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Teleostei (teleosts) > Syngnathiformes (Pipefishes and seahorses) > Syngnathidae (Pipefishes and seahorses) > Syngnathinae
Etymology: Hippocampus: Greek, ippos = horse + Greek,kampe = curvature (Ref. 45335); sindonis: Named for M. Sindo, an assistant curator of fishes at Stanford University (Ref. 117115).
Eponymy: Michitaro Sindo, originally from Yamaguchi, Japan, was one of Jordan’s students at Stanford University, and became Assistant Curator of fishes there. [...] (Ref. 128868), visit book page.
More on authors: Jordan & Snyder.

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

Marine; demersal; non-migratory; depth range 0 - 75 m (Ref. 128812). Subtropical

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

Northwest Pacific: southern Japan.

Length at first maturity / Size / Weight / Age

Maturity: L_m 4.0 range ? - ? cm
Max length : 10.8 cm SL male/unsexed; (Ref. 117115)

Short description Identification keys | Morphology | Morphometrics

This species is distinguished in having the following characters: bony body; double gill openings; R 10 + 35-38 (holotype: 10 + 37); coronet moderately high; CoT 5; CHGO 26.8-41.0 % HL; CHMC 36.3-55.4 % HL; a very blunt or truncated spine on the dorsal fin base; absence of the wing-tip spine on dorsal fin base (Ref. 117115).

Reported to live in a wide range of habitats, from shallow high-energy algae reefs to soft bottom habitats (Ref. 117115). Length type refers to height (= TL - head length). Ovoviviparous (Ref. 205). The male carries the eggs in a brood pouch which is found under the tail (Ref. 205).

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

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: Version 2024-1)

Least Concern (LC) ; Date assessed: 25 August 2016

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
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Ecology
Ecology

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Length-weight rel.
Length-length rel.
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Life cycle
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Maturity/Gills rel.
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Eggs
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Distribution
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Anatomy
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Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 14.2 - 21.6, mean 18.3 °C (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 (0.00175 - 0.01142), b=2.99 (2.77 - 3.21), 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): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).

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

Hippocampus sindonis Jordan & Snyder, 1901