HomeFish encyclopediaRay-finned fishesPerch-like fishDrums or croakersSmooth croaker Smooth croaker (Johnius laevis) Scientific name: Johnius laevis Sasaki & Kailola, 1991 The Smooth croaker (Johnius laevis) is a marine fish of the family Sciaenidae. BiologyDorsal spines (total): 11 - 12; Dorsal soft rays (total): 29-34; Anal spines: 2; Anal soft rays: 7Source: FishBase, licensed CC BY-NC 4.0. Species factsScientific nameJohnius laevisFamilySciaenidae (Drums or croakers)OrderPerciformes (Perch-like fish)ClassActinopterygii (Ray-finned fishes)Maximum length14.0Common length11.0Depth range45–60 m (148–197 ft)EnvironmentMarine; demersal; depth range 45 - 60 mClimateTropicalDistributionIndo-West Pacific: along the coasts of Australia and Papua New Guinea, from about 124? to 144?E. Record from Java and Sumatra is more likely referable to other related species.Conservation status (IUCN)Data deficient (DD)Threat to humansHarmlessUsesFisheries: minor commercialResilienceHigh, 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