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).
More on authors: Jordan & Snyder.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; non-migratory; depth range 2 - 30 m (Ref. 117115). Subtropical
Northwest Pacific: southern Japan and the southern Korean Peninsula. International trade is monitored through a licensing system (CITES II, since 5.15.04).
Length at first maturity / Size / Weight / Age
Maturity: Lm 4.0  range ? - ? cm
Max length : 10.8 cm SL male/unsexed; (Ref. 117115)
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).
Lourie, S.A., A.C.J. Vincent and H.J. Hall, 1999. Seahorses: an identification guide to the world's species and their conservation. Project Seahorse, London. 214 p. (Ref. 30915)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
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
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00447 (0.00175 - 0.01142), 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
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): Low vulnerability (10 of 100).