Article · Wikipedia archive · Last revised May 26, 2026

Shiho's seahorse

Shiho's seahorse or Sindo's Seahorse, painted seahorse is a species of fish in the family Syngnathidae. It is endemic to the Pacific coastal waters of Japan. This species reaches a length of ca. 8 cm. It was listed by the IUCN Red List as Vulnerable in 1996 and Data Deficient in 2003, but was later reclassified as Least Concern. The specific name honours Michitaro Sindo, who was originally from Yamaguchi and who was assistant curator of fishes at Stanford University.

Last revised
May 26, 2026
Read time
≈ 1 min
Length
237 w
Citations
7
Source
Wikipedia ↗
Shiho's seahorse
Hippocampus sindonis
CITES Appendix II 2
Scientific classification Edit this classification
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Syngnathiformes
Family: Syngnathidae
Genus: Hippocampus
Species:
H. sindonis
Binomial name
Hippocampus sindonis

Shiho's seahorse or Sindo's Seahorse,1 painted seahorse (Hippocampus sindonis) is a species of fish in the family Syngnathidae. It is endemic to the Pacific coastal waters of Japan (from Wakayama pref. to Chiba pref.).3 This species reaches a length of ca. 8 cm.4 It was listed by the IUCN Red List as Vulnerable in 1996 and Data Deficient in 2003, but was later reclassified as Least Concern.1 The specific name honours Michitaro Sindo, who was originally from Yamaguchi and who was assistant curator of fishes at Stanford University.5

  • Hippocampus sindonis, conventional and X-ray images of holotype
    Hippocampus sindonis, conventional and X-ray images of holotype
References

References

  1. Pollom, R. (2017). "Hippocampus sindonis". IUCN Red List of Threatened Species. 2017 e.T10083A54906192. doi:10.2305/IUCN.UK.2017-3.RLTS.T10083A54906192.en. Retrieved 14 November 2021.
  2. "Appendices | CITES". cites.org. Retrieved 2022-01-14.
  3. Han, Sang-Yun; Kim, Jin-Koo; Kai, Yoshiaki; Senou, Hiroshi (2017-10-30). "Seahorses of the Hippocampus coronatus complex: taxonomic revision, and description of Hippocampus haema, a new species from Korea and Japan (Teleostei, Syngnathidae)". ZooKeys (712): 113–139. Bibcode:2017ZooK..712..113H. doi:10.3897/zookeys.712.14955. PMC 5704180. PMID 29187790.
  4. Hippocampus sindonis Jordan & Snyder, 1901. Fishbase
  5. Jordan, D. S. & J. O. Snyder (1901). "A review of the hypostomide and lophobranchiate fishes of Japan". Proceedings of the United States National Museum. 24 (1241): 1–20. doi:10.5479/si.00963801.24-1241.1.