HomeFish encyclopediaRay-finned fishesPerch-like fishThreefin blenniesLightning man triplefin Lightning man triplefin (Enneapterygius namarrgon) Scientific name: Enneapterygius namarrgon Fricke, 1997 The Lightning man triplefin (Enneapterygius namarrgon) is a marine fish of the family Tripterygiidae. Native range: Western Central Pacific, apparently endemic to Northern Territory, Australia. BiologyFound on a mixed rock, sand, and algae bottom.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameEnneapterygius namarrgonFamilyTripterygiidae (Threefin blennies)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length2.7Depth range5 m (16 ft)EnvironmentMarine; demersal; depth range ? - 5 mClimateTropicalDistributionWestern Central Pacific: apparently endemic to Northern Territory, Australia.Conservation status (IUCN)Endangered (EN) (B1ab(iii))Threat to humansHarmlessResilienceHigh, 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