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); japapigu: Name from the colloquial Japanese name, Japapigu or Japan pig or 日本のピグミータツノオトシゴ.

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

Marine; reef-associated; depth range 5 - 22 m (Ref. 118476), usually 10 - 13 m (Ref. 118476). Subtropical

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

Northwestern Pacific: Japan and Chinese Taipei.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 1.6 cm SL male/unsexed; (Ref. 118476)

Short description Identification keys | Morphology | Morphometrics

Dorsal soft rays (total): 14. This species is distinguished from its congeners by the following set of characters: 28 tail rings; 14 dorsal fin rays; 9 pectoral fin rays; 4 subdorsal rings; bilaterally paired wing-like protrusions are formed by a pair of large truncate spines projecting laterad on first superior trunk ridge; elevated dorsal ridge is formed by unique triangular bony mounds dorsally on second, the third and fourth trunk rings with the posterior mound less pronounced; a large and prominent spine projecting laterad on eighth lateral trunk ridge (Ref. 118476).

This species was not associated with a particular host. It has been observed in association with mixed soft coral, Halimeda sp. (coralline algae) and hydroids on rocky reef walls and large boulders in both exposed and semi-sheltered locations (Ref. 118476)..

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

Main reference Upload your references | References | Coordinator | Collaborators

Short, G., R. Smith, H. Motomura, D. Harasti and H. Hamilton, 2018. Hippocampus japapigu, a new species of pygmy seahorse from Japan, with a redescription of H. pontohi (Teleostei, Syngnathidae). ZooKeys 779:27-49. (Ref. 118476)

IUCN Red List Status (Ref. 130435: Version 2024-1)

Not Evaluated

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
Food items
Diet composition
Food consumption
Food rations
Predators

Ecology
Ecology

Population dynamics
Growth parameters
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversion
Recruitment
Abundance

Life cycle
Reproduction
Maturity
Maturity/Gills rel.
Fecundity
Spawning
Spawning aggregations
Eggs
Egg development
Larvae
Larval dynamics

Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos

Anatomy
Gill area
Brain
Otolith

Physiology
Body composition
Nutrients
Oxygen consumption
Swimming type
Swimming speed
Visual pigments
Fish sound
Diseases & Parasites
Toxicity (LC50s)

Genetics
Genetics
Heterozygosity
Heritability

Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.

Outreach
Collaborators

Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures

References
References

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

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): 3.0 ±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 japapigu Short, Smith, Motomura, Harasti & Hamilton, 2018