HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsOrigin whiptail Origin whiptail (Hymenocephalus nascens) Scientific name: Hymenocephalus nascens Gilbert & Hubbs, 1920 The Origin whiptail (Hymenocephalus nascens) is a marine fish of the family Macrouridae. Native range: Western Central Pacific, South China Sea off Hong Kong, through Philippines and Indonesia, off northern Australia, to New Caledonia. BiologyDorsal spines (total): 2. Pelvic rays usually 12 or 13. Total gill-rakers first arch (outer/inner) 16-20/22-27, second arch 23-27/22-26; chin barbel absent; snout 26-31% HL; orbit 31-38%; suborb. 2.0-3.0, interorb. 1.0-1.4 into orbit; a prominent midlateral stripe.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameHymenocephalus nascensFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length16.0Depth range366–855 m (1201–2805 ft)EnvironmentMarine; bathydemersal; depth range 366 - 855 mClimateDeep-waterDistributionWestern Central Pacific: South China Sea off Hong Kong, through Philippines and Indonesia, off northern Australia, 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