HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsLargenose grenadier Largenose grenadier (Coryphaenoides nasutus) Scientific name: Coryphaenoides nasutus G?nther, 1877 The Largenose grenadier (Coryphaenoides nasutus) is a marine fish of the family Macrouridae. In the aquarium it needs water at 2–5°C (36–41°F). Native range: Northwest Pacific, northern Japan to East China Sea. Largenose grenadier care at a glanceTemperature2–5°C (36–41°F) BiologyDorsal spines (total): 2; Anal spines: 0. Head almost completely scaled except for underside of snout. Snout short, pointed, with a large conical tubular scale at its tip and smaller tubercles at its lateral angles; suborbital ridge prominent; mouth small, its rictus restricted posteriorly by lip folds. Body scales with long, appressed spinules in convergent rows, except those on nape and chest, which are arranged in divergent rows. Pyloric caeca 8 to 12. Ground color somewhat tawny; oral cavity grayish; branchial cavity blackish; orbital rims blackish; fins dusky, darker distally.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCoryphaenoides nasutusFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length47.0Depth range625–1180 m (2051–3871 ft)EnvironmentMarine; bathydemersal; non-migratory; depth range 625 - 1180 mClimateDeep-waterDistributionNorthwest Pacific: northern Japan to East China Sea.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: minor commercialResilienceMedium, minimum population doubling time 1.4 - 4.4 years (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