HomeFish encyclopediaRay-finned fishesPerch-like fishJawfishesHarlequin jawfish Harlequin jawfish (Stalix histrio) Scientific name: Stalix histrio Jordan & Snyder, 1902 The Harlequin jawfish (Stalix histrio) is a marine fish of the family Opistognathidae. Native range: Indo-West Pacific, Red Sea and Japan. BiologyFound in shallow protected coastal bays. Rare species. Mouthbrooders.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameStalix histrioFamilyOpistognathidae (Jawfishes)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length3.0EnvironmentMarine; benthopelagicClimateTropicalDistributionIndo-West Pacific: Red Sea and Japan.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