HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesFlat-nosed pipepfish Flat-nosed pipepfish (Microphis argulus) Scientific name: Microphis argulus Peters, 1855 The Flat-nosed pipepfish (Microphis argulus) is a freshwater fish of the family Syngnathidae. Native range: Western Indian Ocean, Mauritius and the Comoros. Pacific Ocean: Indonesia to the Marquesan Islands, north to New Guinea, south to the Society Islands. BiologyOccurs in coastal rivers, streams, and estuaries. Ovoviviparous. The male carries the eggs in a brood pouch which is found under the tail. Males may be brooding at 9.7 cm SL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicrophis argulusFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length15.0EnvironmentMarine; freshwater; brackish; demersalClimateTropicalDistributionWestern Indian Ocean: Mauritius and the Comoros. Pacific Ocean: Indonesia to the Marquesan Islands, north to New Guinea, south to the Society Islands.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