HomeFish encyclopediaRay-finned fishesPerch-like fishCales and weed-whitingsPencil weed whiting Pencil weed whiting (Siphonognathus beddomei) Scientific name: Siphonognathus beddomei Johnston, 1885 The Pencil weed whiting (Siphonognathus beddomei) is a brackish-water fish of the family Odacidae. Native range: Eastern Indian Ocean, southern Australia, from Perth, Western Australia to Wilsons Promontory, Victoria; including Tasmania. BiologyCommon on rocky reefs with thick growths of brown macroalgae at depths of 10 m; also in areas of only moderate wave action.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSiphonognathus beddomeiFamilyOdacidae (Cales and weed-whitings)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length12.0Depth range1–20 m (3–66 ft)EnvironmentMarine; brackish; demersal; depth range 1 - 20 mClimateSubtropicalDistributionEastern Indian Ocean: southern Australia, from Perth, Western Australia to Wilsons Promontory, Victoria; including Tasmania.Conservation status (IUCN)Least Concern (LC)Threat to humansHarmlessUsesFisheries: of no interest; aquarium: potentialResilienceHigh, 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