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NL·0734AnimalsSyngnathidaeFish2,706 field observations
Spotted seahorseNL·0734
Plate 1 of 3. (c) Joachim S. Müller, some rights reserved (CC BY-NC-SA) · via iNaturalist

Herbarium of the Nature Library

Name
Hippocampus kuda
Family
Syngnathidae
Native to
Indo-Pacific from India and the Persian Gulf to Japan, Indonesia, the Philippines and Hawaii
Habitat
Seagrass meadow, Estuaries, Mangrove, Coastal waters
IUCN VU · Vulnerable

Spotted seahorse

Hippocampus kuda

Also calledKuda laut, 'sea horse' (Malay/Indonesian) · Hǎimǎ 海马 (Chinese) · Tatsu-no-otoshigo, 'dragon's child' (Japanese) · Cá ngựa (Vietnamese)

A small, upright-swimming fish of Indo-Pacific estuaries and seagrass beds in which the male, not the female, becomes pregnant. Its species name comes from the Malay word for horse.

Hippocampus kuda is a species of seahorse, also known as the common seahorse, estuary seahorse, yellow seahorse or spotted seahorse. The common name sea pony has been used for populations formerly treated as the separate species Hippocampus fuscus, now a synonym of H. kuda. Wikipedia

§1

What it can do

  1. iMales carry fertilised eggs in a brood pouch, supply them with oxygen and give birth to live young
  2. iiAnchors itself with a prehensile tail
  3. iiiMoves each eye independently
  4. ivSucks prey into its tube-like snout in a few milliseconds
  5. vChanges colour to match its surroundings
§2

In the field

Field marks

  • aUpright seahorse with a curled tail
  • bYellow, black or brown with fine spots
  • cLow crown and smooth body
  • dLong snout
Not to be confused with
Other Indo-Pacific seahorses are very similar; experts check spines, crown and ring counts.
When
Resident
§3

Life & habits

Diet
Carnivore: copepods, small shrimp and other tiny crustaceans
Habitat
Shallow seagrass, estuaries, mangroves and harbours, often in murky water
Size
Up to ~17 cm
Lifespan
1–4 years

Paired seahorses often greet each other each morning with a 'dance' of changing colour and linked tails.

§4

Where it lives

Recorded sightings

—

geo-referenced records in GBIF, from museums, herbaria and field observers.

Native range

Indo-Pacific from India and the Persian Gulf to Japan, Indonesia, the Philippines and Hawaii

Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.

§5

In the old herbals & bestiaries

Woodcuts and engravings matched from the Source Library’s scanned books by name. Plates marked “relative” show a close kin rather than this exact species. Click a plate to read the page it came from, with translation.

§6

In the stacks

Searching the stacks…

Every page naming Hippocampus kuda in the Biodiversity Heritage Library →

§7

Marginalia

Its form recalls the hippocampus, the sea-horse that pulled Poseidon's chariot in Greek myth, and Conrad Gessner illustrated seahorses in his Historiae animalium (1558). Dried seahorses (hǎimǎ) are a long-standing ingredient in traditional Chinese medicine, which drives much of the trade in wild seahorses.

Curiosity

A male can give birth to hundreds of babies at once.

§8

Kinship

  1. kingdomAnimalia
  2. ›phylumChordata
  3. ›subphylumVertebrata
  4. ›classActinopterygii
  5. ›superorderAcanthomorpha
  6. ›orderSyngnathiformes
  7. ›suborderSyngnathoidei
  8. ›familySyngnathidae
  9. ›subfamilySyngnathinae
  10. ›genusHippocampus
Open its branch on the Wheel of Life →

Photographs: iNaturalist contributors under the licences shown. Records: GBIF.org. Historical plates: Source Library (CC BY-SA 4.0; originals public domain). Summary text: Nature Library editors and Wikipedia (CC BY-SA). Medicinal and edibility notes are historical and educational, not advice. iNaturalist taxon 84970.