HomeFish encyclopediaRay-finned fishesPerch-like fishCales and weed-whitingsLongtail weed whiting Longtail weed whiting (Siphonognathus tanyourus) Scientific name: Siphonognathus tanyourus Gomon & Paxton, 1986 The Longtail weed whiting (Siphonognathus tanyourus) is a marine fish of the family Odacidae. Native range: Eastern Indian Ocean, southern Australia, from Recherche Archipelago, Western Australia to Wilsons Promontory and Portland, Victoria. BiologyA benthic species which occurs inshore. Apparently restricted to moderately high-energy coastal locations with dominant stands of brown macroalgae such as Phyllospora comosa and Ecklonia radiata.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameSiphonognathus tanyourusFamilyOdacidae (Cales and weed-whitings)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length11.0Depth range1–19 m (3–62 ft)EnvironmentMarine; demersal; depth range 1 - 19 mClimateSubtropicalDistributionEastern Indian Ocean: southern Australia, from Recherche Archipelago, Western Australia to Wilsons Promontory and Portland, Victoria.Conservation status (IUCN)Data deficient (DD)Threat 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