HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesBrown topknot Brown topknot (Notoclinus compressus) Scientific name: Notoclinus compressus Hutton, 1872 The Brown topknot (Notoclinus compressus) is a marine fish of the family Tripterygiidae. Native range: Southwest Pacific, New Zealand. BiologyUsually among large brown algae (Carpophyllum and Cystophora). Feeds on weed dwelling crustaceans and small fish.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameNotoclinus compressusFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length8.5Depth range0–5 m (0–16 ft)EnvironmentMarine; demersal; depth range 0 - 5 mClimateTemperateDistributionSouthwest Pacific: New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, 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