HomeFish encyclopediaRay-finned fishesPerch-like fishDuckbillsRoundtail duckbill Roundtail duckbill (Bembrops greyi) Scientific name: Bembrops greyi Poll, 1959 The Roundtail duckbill (Bembrops greyi) is a marine fish of the family Percophidae. Native range: Eastern Atlantic, off coasts of Guinea, Gabon, Congo, and Angola. BiologyDorsal spines (total): 6; Dorsal soft rays (total): 15-17; Anal soft rays: 18. Dark brown to black pigmentation entirely or on most of the membrane of first dorsal fin. Color in alcohol light yellow dorsally, even lighter ventrally. Snout short (1.1-1.2x eye diameter). Scales on lateral and dorsal sides of snout. Upper jaw extending behind anterior margin of eye reaching almost to its mid-line. Lateral line descending adjacent to pectoral fin (Ref 13203).Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBembrops greyiFamilyPercophidae (Duckbills)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length25.0Depth range200–420 m (656–1378 ft)EnvironmentMarine; bathydemersal; depth range 200 - 420 mClimateDeep-waterDistributionEastern Atlantic: off coasts of Guinea, Gabon, Congo, and Angola.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: 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