HomeFish encyclopediaRay-finned fishesPerch-like fishClinidsCrested weedfish Crested weedfish (Cristiceps australis) Scientific name: Cristiceps australis Valenciennes, 1836 The Crested weedfish (Cristiceps australis) is a brackish-water fish of the family Clinidae. Native range: Indo-West Pacific, southern Australia. BiologyDorsal spines (total): 29 - 32; Dorsal soft rays (total): 6-8; Anal spines: 2; Anal soft rays: 24 - 26. Pelvic fin rays thick, finger-like, almost reaching anus. Extremely variable in color and pattern; usually matches various types of weed colors; some diffused banding.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameCristiceps australisFamilyClinidae (Clinids)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length18.0Depth range30 m (98 ft)EnvironmentMarine; brackish; demersal; depth range ? - 30 mClimateTemperateDistributionIndo-West Pacific: southern Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmless SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026