HomeFish encyclopediaRay-finned fishesPerch-like fishAsiatic glassfishesPort Jackson perchlet Port Jackson perchlet (Ambassis jacksoniensis) Scientific name: Ambassis jacksoniensis Macleay, 1881 The Port Jackson perchlet (Ambassis jacksoniensis) is a freshwater fish of the family Ambassidae. Native range: Southwest Pacific, Endemic to Australia. BiologyDorsal spines (total): 8; Dorsal soft rays (total): 9-11; Anal spines: 3; Anal soft rays: 8 - 9; Vertebrae: 24. Adults have a single supraorbital spine, a short-based, deeply notched dorsal fin, and are transparent and silvery.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameAmbassis jacksoniensisFamilyAmbassidae (Asiatic glassfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length7.0Depth range0–6 m (0–20 ft)EnvironmentMarine; freshwater; brackish; demersal; depth range 0 - 6 mClimateSubtropicalDistributionSouthwest Pacific: Endemic to Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceHigh, minimum population doubling time less than 15 months (Assuming Fec > 10,000) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026