HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsWestern softhead grenadier Western softhead grenadier (Malacocephalus occidentalis) Scientific name: Malacocephalus occidentalis Goode & Bean, 1885 The Western softhead grenadier (Malacocephalus occidentalis) is a marine fish of the family Macrouridae. Native range: Atlantic Ocean, in tropical and warm-temperate waters. BiologyDorsal spines (total): 0; Anal spines: 0. Snout short, narrow, weakly pointed. Chin barbel relatively long, about equal in length to eye diameter. Space between first and second dorsal fins wide. Overall color blackish, upper lateral and leading edge of snout, orbital rims, lower margin of suborbital, lips and gular membrane black.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMalacocephalus occidentalisFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length45.0Common length35.0Depth range140–1945 m (459–6381 ft)EnvironmentMarine; bathydemersal; non-migratory; depth range 140 - 1945 m, usually 300 - 500 mClimateDeep-waterDistributionAtlantic Ocean: in tropical and warm-temperate waters.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