HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsWhitson's grenadier Whitson's grenadier (Macrourus whitsoni) Scientific name: Macrourus whitsoni Regan, 1913 The Whitson's grenadier (Macrourus whitsoni) is a marine fish of the family Macrouridae. Native range: Southern Ocean, Circumpolar (generally confined inside the Convergence except in the Falkland Islands area). BiologyDorsal spines (total): 2; Dorsal soft rays (total): 124-125; Anal spines: 0; Anal soft rays: 110. Eyes relatively large. Snout short, moderately pointed, usually somewhat rounded with a high dorsal profile in adults, but often with prominent tubercles at its tip and lateral angles. Mouth large, lips thin. Underside of the head generally covered with small scales. Pyloric caeca 18 to 28. Overall color dark brown to swarthy in most individuals, but some are much paler; fins and lips blackish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMacrourus whitsoniFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length75.0Depth range400–3185 m (1312–10449 ft)EnvironmentMarine; bathypelagic; oceanodromous; depth range 400 - 3185 m, usually 600 - 1500 mClimateDeep-waterDistributionSouthern Ocean: Circumpolar (generally confined inside the Convergence except in the Falkland Islands area).Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercialResilienceLow, minimum population doubling time 4.5 - 14 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