HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesOrnate pipefish Ornate pipefish (Halicampus macrorhynchus) Scientific name: Halicampus macrorhynchus Bamber, 1915 The Ornate pipefish (Halicampus macrorhynchus) is a marine fish of the family Syngnathidae. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 18-19. Superior trunk and tail ridges discontinuous; inferior trunk ridge ending at anal ring; lateral trunk ridge continuous with inferior tail ridge; body rings 14 or 15 + 25-25. Colors vary with habitat, colorful on algae-rubble and dull on sand.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHalicampus macrorhynchusFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length18.0Depth range3–25 m (10–82 ft)EnvironmentMarine; reef-associated; depth range 3 - 25 mClimateTropicalDistributionIndo-West Pacific: northern Red Sea (Gulfs of Suez and Aqaba), Indonesia off Sumbawa Islands, Queensland in Australia, Port Moresby in Papua New Guinea, New Britain Islands and Guadalcanal Islands in the Solomon 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