HomeFish encyclopediaRay-finned fishesFlatfishesTurbotsEckstr?m's topknot Eckstr?m's topknot (Zeugopterus regius) Scientific name: Zeugopterus regius Bonnaterre, 1788 The Eckstr?m's topknot (Zeugopterus regius) is a brackish-water fish of the family Scophthalmidae. Native range: Eastern Atlantic, British Isles to Morocco; also in the western Mediterranean and the Adriatic Sea. BiologyOccurs over rocky bottoms, less frequently on sandy bottoms. Feeds on small fish and invertebrates. Reproduction between February and August.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameZeugopterus regiusFamilyScophthalmidae (Turbots)OrderPleuronectiformes (Flatfishes)ClassActinopterygii (Ray-finned fishes)Maximum length20.0Common length12.0Depth range10–180 m (33–591 ft)EnvironmentMarine; brackish; demersal; depth range 10 - 180 mClimateSubtropicalDistributionEastern Atlantic: British Isles to Morocco; also in the western Mediterranean and the Adriatic Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: minor commercialResilienceHigh, minimum population doubling time less than 15 months (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