HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesJanss' pipefish Janss' pipefish (Doryrhamphus janssi) Scientific name: Doryrhamphus janssi Herald & Randall, 1972 The Janss' pipefish (Doryrhamphus janssi) is a marine fish of the family Syngnathidae. Native range: Western Central Pacific, Gulf of Thailand to the Solomon Islands, north to the Philippines, south to Queensland; Belau and Truk in Micronesia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 22-25. Superior trunk and tail ridges discontinuous; inferior trunk ridge ending on anal ring; lateral trunk ridge continuous with inferior tail ridge; body rings 16; tail rings 21-23.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameDoryrhamphus janssiFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length14.0Depth range0–35 m (0–115 ft)EnvironmentMarine; reef-associated; depth range 0 - 35 mClimateTropicalDistributionWestern Central Pacific: Gulf of Thailand to the Solomon Islands, north to the Philippines, south to Queensland; Belau and Truk in Micronesia.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Preliminary K or Fecundity.) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026