HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesShortnose pipefish Shortnose pipefish (Micrognathus andersonii) Scientific name: Micrognathus andersonii Bleeker, 1858 The Shortnose pipefish (Micrognathus andersonii) is a marine fish of the family Syngnathidae. Native range: Indo-Pacific, East Africa and Red Sea to Samoa, north to southern Japan, south to Tonga; Belau, to the eastern Caroline and Mariana Islands in Micronesia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 17-24; Anal spines: 0; Anal soft rays: 3. Pale to dark brown in color, often with 2-3 blotches on sides of trunk.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicrognathus andersoniiFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length8.5Depth range0–10 m (0–33 ft)EnvironmentMarine; reef-associated; depth range 0 - 10 mClimateTropicalDistributionIndo-Pacific: East Africa and Red Sea to Samoa, north to southern Japan, south to Tonga; Belau, to the eastern Caroline and Mariana Islands in Micronesia.Conservation status (IUCN)Not EvaluatedThreat 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