HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesSouthern barred triplefin Southern barred triplefin (Brachynectes fasciatus) Scientific name: Brachynectes fasciatus Scott, 1957 The Southern barred triplefin (Brachynectes fasciatus) is a marine fish of the family Tripterygiidae. Native range: Indo-Pacific, Widespread around Australia's south coast and Tasmania. BiologyFound in rock pools and the upper subtidal zone. Mostly associated with seagrass beds.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameBrachynectes fasciatusFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length4.1Depth range0–13 m (0–43 ft)EnvironmentMarine; demersal; non-migratory; depth range 0 - 13 mClimateTemperateDistributionIndo-Pacific: Widespread around Australia's south coast and Tasmania.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