HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesStriped triplefin Striped triplefin (Forsterygion varium) Scientific name: Forsterygion varium Forster, 1801 The Striped triplefin (Forsterygion varium) is a marine fish of the family Tripterygiidae. Native range: Southwest Pacific, Tasmania, Australia and New Zealand, including the Chatham Islands. BiologyInhabits rock pools and sub-tidally down to 30 m. Feeds on benthic invertebrates. Spawns from May to November.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameForsterygion variumFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length13.0Depth range0–30 m (0–98 ft)EnvironmentMarine; demersal; depth range 0 - 30 mClimateTemperateDistributionSouthwest Pacific: Tasmania, Australia and New Zealand, including the Chatham Islands.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Tmax=4; K=1.85) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026