Pipehorses
As the name implies, pipehorses have a posture that is halfway between that of a pipefish and that of a seahorse. This group of fishes has the elongated body and horizontal posture of a pipefish, as well as the characteristic prehensile tail of a seahorse. Similar to both of those groups, pipehorses have elongated snouts for capturing small prey and can be extremely well-camouflaged.
Pipehorses are an extremely diverse group of fishes, with pygmy pipehorses only reaching about 6 cm in length, while the larger species can reach up to 60 cm. Little is known about most pipehorse species, but those with enough data to be assessed seem to be relatively unthreatened.
Learn more about pipefishes by checking out the profiles below.
Syngnathidae (Pygmy pipehorses)
Species |
Range |
IUCN |
Learn more |
|
 |
Acentronura breviperula Fraser-Brunner & Whitley, 1949 English common names: Northern little pipehorse, Shortpouch pygmy pipehorse |
Eastern Indian & Western Pacific |
|
|
 |
Acentronura gracilissima (Temminck & Schlegel, 1850) English common names: Graceful pipehorse, Bastard seahorse |
Western Pacific |
|
|
 |
Acentronura tentaculata Günther, 1870 English common names: Shortpouch pygmy pipehorse, Dwarf pipehorse, Nothern little pipehorse |
Indian & Western Pacific |
|
|
 |
Amphelikturus dendriticus (Barbour, 1905) English common names: West Atlantic pygmy pipehorse, Atlantic pipehorse |
Western Atlantic |
|
|
 |
Cylix tupareomanaia Short, Trnski & Ngātiwai, 2021 English common names: Manaia pygmy pipehorse, Manaua pygmy pipehorse |
Western Pacific |
|
|
 |
Idiotropiscis australis (Waite & Hale, 1921) English common names: Southern little pipehorse, Southern pygmy pipehorse, little pipehorse |
Eastern Indian |
|
|
 |
I. larsonae Dawson, 1984 English common names: Larson's pipehorse, Helen's pygmy pipehorse |
Eastern Indian |
|
|
 |
I. lumnitzeri (Kuiter, 2004) English common names: Sydney's pygmy pipehorse |
Western Pacific |
|
|
Syngnathidae (Pipehorses)
Species |
Range |
IUCN |
Learn more |
|
 |
Solegnathus dunckeri Whitley, 1927 English common names: Duncker's pipehorse, Duncker's pipefish, Dunker's pipehorse, Red-and-gold pipehorse, Spiny seadragon |
Western Pacific |
|
|
 |
S. hardwickii (Gray, 1830) English common names: Hardwicke's pipehorse, Hardwicke's pipefish, Pallid pipehorse, Pallid seahorse, Bared-tail seahorse |
Eastern Indian & Western Pacific |
|
|
 |
S. lettiensis Bleeker, 1860 English common names: Günther's pipehorse |
Eastern Indian |
|
|
 |
S. robustus McCulloch, 1911 English common names: Robust pipehorse, Robust spiny pipehorse |
Eastern Indian |
|
|
 |
S. spinosissimus (Günther, 1870) English common names: Australian spiny pipehorse, Banded pipehorse, Banded pipefish, Spiny pipehorse, Spiny seadragon |
Western Pacific |
|
|
IUCN Red List categories
Click here for a full explanation of IUCN Red List categories. A brief key is provided below.
|
|
|
|
|
|
|
|
|
| Extinct | Extinct in the Wild |
Critically Endangered |
Endangered | Vulnerable | Near Threatened |
Least Concern |
Data Deficient |
Not Evaluated |
A note on ‘Data Deficient’ species: Species that are assessed as Data Deficient are deemed to have insufficient information known about them to carry out a proper conservation assessment. Although such species are not assessed as threatened, we may find out that they in fact are, once enough data is obtained.
Banner image of Sydney's pygmy pipefish (Idiotropiscis lumnitzeri) © mikejonesdive / iNaturalist
Image of Northern little pipehorse (Acentronura breviperula) © christyteal / iNaturalist
Image of Graceful pipehorse (Acentronura gracilissima) © Arne Kullman
Image of Shortpouch pygmy pipehorse (Acentronura tentaculata) © rafi1 / iNaturalist
Image of West Atlantic pygmy pipehorse (Amphelikturus dendriticus) © wetlens / iNaturalist
Image of Manaia pygmy pipehorse (Cylix tupareomanaia) © Irene Middleton
Image of Southern little pipehorse (Idiotropiscis australis) © henrycarrick / iNaturalist
Image of Larson's pipehorse (Idiotropiscis larsonae) © Graham Short
Image of Sydney's pygmy pipehorse (Idiotropiscis lumnitzeri) © mikejonesdive / iNaturalist
Image of Duncker's pipehorse (Solegnathus dunckeri) © divercraig / iNaturalist
Illustration of pipefish (Solegnathus hardwickii) © Yuri Katayama
Image of Günther's pipehorse (Solegnathus lettiensis) © Australian National Fish Collection / CSIRO
Image of Robust pipehorse (Solegnathus robustus) © itn / iNaturalist
Image of Australian spiny pipehorse (Solegnathus spinosissimus) © elusiveorchids / iNaturalist
[Page updated Jun 2026]