HomeFish encyclopediaRay-finned fishesCodsGrenadiers or rattailsKotlyar's whiptail Kotlyar's whiptail (Mataeocephalus kotlyari) Scientific name: Mataeocephalus kotlyari Sazonov, Shcherbachev & Iwamoto, 2003 The Kotlyar's whiptail (Mataeocephalus kotlyari) is a marine fish of the family Macrouridae. Native range: Southwestern Pacific, Australia, and Chesterfield and Bellona Plateau. Species factsScientific nameMataeocephalus kotlyariFamilyMacrouridae (Grenadiers or rattails)OrderGadiformes (Cods)ClassActinopterygii (Ray-finned fishes)Maximum length22.5Depth range412–1000 m (1352–3281 ft)EnvironmentMarine; benthopelagic; depth range 412 - 1000 m, usually 700 - 900 mClimateSubtropicalDistributionSouthwestern Pacific: Australia, and Chesterfield and Bellona Plateau.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, 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