HomeMarine aquarium fishSeahorses & pipefishLong-snouted seahorse Long-snouted seahorse (Hippocampus guttulatus) Scientific name: Hippocampus guttulatus Cuvier, 1829 The Long-snouted seahorse (Hippocampus guttulatus) is a marine fish of the family Syngnathidae. BiologyCommonly referred to as Hippocampus ramulosus. Occurs mostly in shallow inshore waters among algae and eel grass (Zostera or Posidonia) and also in littoral lagoons. Spawns from April to October. Ovoviviparous. The male carries the eggs in a brood pouch which is found under the tail. Length type OT refers to height (= TL - head length),.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHippocampus guttulatusFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length21.5Depth range12 m (39 ft)EnvironmentMarine; demersal; non-migratory; depth range ? - 12 mClimateTemperateDistributionEastern Atlantic: British Isles to Morocco, Canary Islands, Madeira, and the Azores including the Mediterranean. Black Sea specimens may represent a different species. International trade is monitored through a licensing system (CITES II, since 5.15.04) and a minimum size of 10 cm applies.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercial; aquarium: commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Fec=581) More seahorses & pipefishLeafy seadragonPhycodurus equesNarrow-bellied seahorseHippocampus angustusLined seahorseHippocampus erectusPacific seahorseHippocampus ingensLongspine snipefishMacroramphosus scolopaxBarbour's seahorseHippocampus barbouriSee all seahorses & pipefish SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026