HomeFish encyclopediaRay-finned fishesPipefishes and SeahorsesPipefishes and seahorsesSnubnose pipefish Snubnose pipefish (Cosmocampus arctus arctus) Scientific name: Cosmocampus arctus arctus Jenkins & Evermann, 1889 The Snubnose pipefish (Cosmocampus arctus arctus) is a marine fish of the family Syngnathidae. Native range: Eastern Pacific, Tomales Bay, California to Mazatl?n, Mexico; throughout the Gulf of California. BiologyAdults occur in bay and reef localities among eelgrass and algae. Also pelagic. Males may be mature at 5.9 cm SL. Ovoviviparous. The male carries the eggs in a brood pouch which is found under the tail.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCosmocampus arctus arctusFamilySyngnathidae (Pipefishes and seahorses)OrderSyngnathiformes (Pipefishes and Seahorses)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range10 m (33 ft)EnvironmentMarine; reef-associated; depth range ? - 10 mClimateSubtropicalDistributionEastern Pacific: Tomales Bay, California to Mazatl?n, Mexico; throughout the Gulf of California.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