HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesLightfishesBrilliant lightfish Brilliant lightfish (Polymetme illustris) Scientific name: Polymetme illustris McCulloch, 1926 The Brilliant lightfish (Polymetme illustris) is a marine fish of the family Phosichthyidae. Native range: Eastern Indian Ocean to Western Pacific, Australia. BiologyDorsal spines (total): 0; Dorsal soft rays (total): 11; Anal soft rays: 27 - 30; Vertebrae: 42 - 44. Pyloric caeca 6-7; photophores above anal fin 16-17.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific namePolymetme illustrisFamilyPhosichthyidae (Lightfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length14.8Depth range230–822 m (755–2697 ft)EnvironmentMarine; bathydemersal; depth range 230 - 822 mClimateTemperateDistributionEastern Indian Ocean to Western Pacific: Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026