HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesScaly-headed triplefin Scaly-headed triplefin (Karalepis stewarti) Scientific name: Karalepis stewarti Hardy, 1984 The Scaly-headed triplefin (Karalepis stewarti) is a marine fish of the family Tripterygiidae. Native range: Southwest Pacific, around mainland New Zealand. BiologyNocturnal species found in crevices or holes during the day. Feeds on small crustaceans and mollusks.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameKaralepis stewartiFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length15.0Depth range0–33 m (0–108 ft)EnvironmentMarine; demersal; depth range 0 - 33 m, usually 0 - 10 mClimateTemperateDistributionSouthwest Pacific: around mainland New Zealand.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: of no interestResilienceHigh, minimum population doubling time less than 15 months (K=0.54) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026