HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesDumb?a river pipefish Dumb?a river pipefish (Microphis cruentus) Scientific name: Microphis cruentus Dawson & Fourmanoir, 1981 The Dumb?a river pipefish (Microphis cruentus) is a freshwater fish of the family Syngnathidae. Native range: Oceania, endemic to New Caledonia. BiologyOccurs in rivers to elevations of at least 8 m. Ovoviviparous. The male carries the eggs in a brood pouch which is found under the tail. Males may be brooding at about 10 cm SL.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMicrophis cruentusFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length15.5EnvironmentFreshwater; demersalClimateTropicalDistributionOceania: endemic to New Caledonia.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