HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsRoundnose grenadier Roundnose grenadier (Coryphaenoides rupestris) Scientific name: Coryphaenoides rupestris Gunnerus, 1765 The Roundnose grenadier (Coryphaenoides rupestris) is a marine fish of the family Macrouridae. BiologyBenthopelagic to bathypelagic in about 400 and 1200 m depth. Minimum depth from. Form large schools at 600 to 900 m depth. Feed on a variety of fish and invertebrates, but primarily on pelagic crustaceans such as shrimps, amphipods and cumaceans; cephalopods and lantern fishes constitute a lesser portion of the diet. Batch spawner. This species is currently facing overexploitation in the North Atlantic. Utilized frozen and for fishmeal; can be fried and baked.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCoryphaenoides rupestrisFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length110Depth range180–2600 m (591–8530 ft)EnvironmentMarine; bathypelagic; depth range 180 - 2600 m, usually 400 - 1200 mClimateDeep-waterDistributionNorth Atlantic: from about 37?N to Baffin Island and Greenland in the western Atlantic, and off Iceland and Norway south to North Africa in the eastern Atlantic. Reported to occur from the tongue of the Ocean east of Andros Islands (about 24?N, 77?W) in the Bahamas.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 years (K=0.1; tm=9-11; tmax=54; Fec=10,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026