HomeFish encyclopediaRay-finned fishesLightfishes and DragonfishesMarine hatchetfishesJavan pearlside Javan pearlside (Maurolicus javanicus) Scientific name: Maurolicus javanicus Parin & Kobyliansky, 1993 The Javan pearlside (Maurolicus javanicus) is a marine fish of the family Sternoptychidae. Native range: Eastern Indian Ocean, off Java, Indonesia and Australia. Western Central Pacific: northern Coral Sea. BiologyVertebrae: 30 - 31. AC photophores 24-27, usually 25-26.Head 28.5-31% SL, eye 9.5-10.5% SL, upper jaw 16.5-17.5% SL, maximum body depth at or behind pectoral fin base 23-25% SL. Stomach and hind part of intestine not pigmented.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameMaurolicus javanicusFamilySternoptychidae (Marine hatchetfishes)OrderStomiiformes (Lightfishes and Dragonfishes)ClassActinopterygii (Ray-finned fishes)Maximum length4.4EnvironmentMarine; bathypelagicClimateDeep-waterDistributionEastern Indian Ocean: off Java, Indonesia and Australia. Western Central Pacific: northern Coral Sea.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessResilienceMedium, minimum population doubling time 1.4 - 4.4 years (Assuming Fec SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026