HomeFish encyclopediaRay-finned fishesPerch-like fishSnappersJohn's snapper John's snapper (Lutjanus johnii) Scientific name: Lutjanus johnii Bloch, 1792 The John's snapper (Lutjanus johnii) is a brackish-water fish of the family Lutjanidae. Native range: Indo-West Pacific, East Africa to Fiji, north to the Ryukyu Islands, south to Australia. BiologyAdults probably frequent coral reef areas; juveniles found in mangrove estuaries. Feeds on fishes and benthic invertebrates including shrimps, crabs and cephalopods. In Hong Kong live fish markets.Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameLutjanus johniiFamilyLutjanidae (Snappers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length97.0Common length50.0Depth range80 m (262 ft)EnvironmentMarine; brackish; reef-associated; oceanodromous; depth range ? - 80 mClimateTropicalDistributionIndo-West Pacific: East Africa to Fiji, north to the Ryukyu Islands, south to Australia.Conservation status (IUCN)Not EvaluatedThreat to humansHarmlessUsesFisheries: commercial; aquaculture: commercial; gamefish: yesResilienceMedium, minimum population doubling time 1.4 - 4.4 years (K=0.13-0.38) SourcesTaxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.Last updated 27 September 2026